Display device

Abstract

A pressure sensor and a display device including the pressure sensor are provided. The display device includes: a display panel including a first side surface and a first lower surface connected to the first side surface and being a surface opposite to the display surface; the pressure sensor disposed on the first lower surface of the display panel; and a lower bracket including an upper surface facing the first lower surface of the display panel and a second side surface facing the first side surface of the display panel.

Description

Technical Field

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

[0002] Electronic devices that provide images to users, such as smartphones, tablet personal computers (PCs), digital cameras, notebook computers, navigation systems, and smart TVs, include display devices for displaying images. The display device includes a display panel and various input devices for generating and displaying images.

[0003] Recently, a touch panel that recognizes a touch input is widely used in a display device mainly in a smart phone or a tablet PC. Due to the convenience of a touch method, the touch panel tends to replace a conventional physical input device such as a keyboard.

[0004] In addition to the touch panel, various inputs are being studied by mounting a pressure sensor on a display device. In addition, research is also being conducted to reduce the area occupied by the pressure sensor when the pressure sensor is mounted on the display device. Summary of the invention

[0005] [Technical issues]

[0006] The present invention aims to provide a display device with a simplified set of pressure sensors.

[0007] The present invention also aims to provide a pressure sensor having a reduced appearance.

[0008] The present invention also aims to provide a display device including a pressure sensor having a reduced appearance.

[0009] It should be noted that the objects of the present invention are not limited to the above objects, and other objects of the present invention will be apparent to those skilled in the art from the following description.

[0010] [Technical solution]

[0011] According to a display device of an embodiment for solving the above-mentioned problem, the display device includes: a display panel, including a first side surface and a first lower surface, the first lower surface is connected to the first side surface and is a surface opposite to the display surface; a pressure sensor, which is arranged on the first lower surface of the display panel; and a lower bracket, including an upper surface facing the first lower surface of the display panel and a second side surface facing the first side surface of the display panel, wherein the pressure sensor is arranged between the first lower surface of the display panel and the upper surface of the lower bracket, and is arranged on the second side surface of the lower bracket, and the pressure sensor includes: a first substrate, facing the second side surface of the lower bracket; a first pressure sensing layer, which is arranged between the first substrate and the second side surface of the lower bracket; a first driving electrode, which is arranged between the first pressure sensing layer and the second side surface of the lower bracket; and a first sensing electrode, which is spaced apart from the first driving electrode, and there is a gap between the first pressure sensing layer and the first driving electrode and the first sensing electrode.

[0012] The second side surface of the lower bracket may include: a first sub-side surface; a second sub-side surface; and a third sub-side surface, which is recessed deeper than the first sub-side surface and the second sub-side surface, and the pressure sensor is arranged to overlap with the third sub-side surface and be embedded in the side surface portion formed by the first sub-side surface to the third sub-side surface.

[0013] The pressure sensor may further include: a second substrate facing the first substrate and disposed between the second side surface of the lower support and the first driving electrode and the first sensing electrode, wherein the second substrate is attached to the lower support.

[0014] The strength of the first substrate may be greater than the strength of the second substrate, and the first substrate further includes a rigidity reinforcing material.

[0015] The first driving electrode and the first sensing electrode may be directly disposed on the second side surface of the lower support.

[0016] The pressure sensor may further include: a second driving electrode disposed between the second side surface of the lower support and the first pressure sensing layer; a second sensing electrode spaced apart from the second driving electrode; and a second pressure sensing layer contacting the second driving electrode and the second sensing electrode.

[0017] The pressure sensor may include: a first driving electrode; a first sensing electrode; a first pressure sensing layer, arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, contacting the first driving electrode and the first sensing electrode and spaced apart from the first pressure sensing layer, wherein the first pressure sensing layer includes a pattern recessed in one direction, and the second pressure sensing layer is arranged in the recessed area of ​​the first pressure sensing layer.

[0018] Each of the first driving electrode and the first sensing electrode may extend in one direction, and the extending directions of the first driving electrode and the first sensing electrode are parallel to each other and do not cross each other.

[0019] The first driving electrodes and the first sensing electrodes may extend in directions crossing each other.

[0020] The first driving electrode may include: a first portion extending in a first direction; and a second portion extending from the first portion in a second direction intersecting the first direction, the first sensing electrode includes: a third portion extending in the first direction; and a fourth portion extending from the third portion in the second direction, the first portion overlapping the third portion, and the second portion overlapping the fourth portion.

[0021] The pressure sensor may include: a first pressure unit and a second pressure unit, the first pressure unit including: a first driving electrode; a first sensing electrode; a first pressure sensing layer, arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, contacting with the first driving electrode and the first sensing electrode and spaced apart from the first pressure sensing layer, the second pressure unit including: the first driving electrode; the second sensing electrode; and a third pressure sensing layer, contacting with the first driving electrode and the second sensing electrode, and in a plan view, the second pressure sensing layer and the third pressure sensing layer are arranged to overlap with the first pressure sensing layer along the same direction.

[0022] The pressure sensor may include a first pressure unit and a second pressure unit, the first pressure unit including: a first driving electrode; a first sensing electrode; a first pressure sensing layer, arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, contacting the first driving electrode and the first sensing electrode and spaced apart from the first pressure sensing layer, the second pressure unit including: the first driving electrode; the second sensing electrode; and a third pressure sensing layer, contacting the first driving electrode and the second sensing electrode, and the first pressure sensing layer being arranged between the second pressure sensing layer and the third pressure sensing layer.

[0023] The pressure sensor may include a first pressure unit and a second pressure unit, the first pressure unit including: a first driving electrode; a first sensing electrode; a first pressure sensing layer, arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, contacting the first driving electrode and the first sensing electrode and spaced apart from the first pressure sensing layer, the second pressure unit including: the first driving electrode; the second sensing electrode; and a third pressure sensing layer, contacting the first driving electrode and the second sensing electrode, and the second pressure sensing layer being arranged between the first pressure sensing layer and the third pressure sensing layer.

[0024] The pressure sensor may include: a first pressure unit; a second pressure unit; and a third pressure unit, which is arranged between the first pressure unit and the second pressure unit, the first pressure unit includes: a first driving electrode; a first sensing electrode; a first pressure sensing layer, which is arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, which is in contact with the first driving electrode and the first sensing electrode and is separated from the first pressure sensing layer, the second pressure unit includes: the first driving electrode; the second sensing electrode; the third pressure sensing layer, which is arranged to overlap with the first driving electrode and the second sensing electrode; and a fourth pressure sensing layer, which is in contact with the first driving electrode and the second sensing electrode and is separated from the third pressure sensing layer, the third pressure unit includes: the first driving electrode; the third sensing electrode; and a fifth pressure sensing layer, which is in contact with the first driving electrode and the third sensing electrode, and the fifth pressure sensing layer is arranged between the first pressure sensing layer and the third pressure sensing layer.

[0025] The pressure sensor may include: a first pressure unit; a second pressure unit; and a third pressure unit, which is arranged between the first pressure unit and the second pressure unit, the first pressure unit includes: a first driving electrode; a first sensing electrode; a first pressure sensing layer, which is arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, which is in contact with the first driving electrode and the first sensing electrode and is separated from the first pressure sensing layer, the second pressure unit includes: the first driving electrode; the second sensing electrode; the third pressure sensing layer, which is arranged to overlap with the first driving electrode and the second sensing electrode; and a fourth pressure sensing layer, which is in contact with the first driving electrode and the second sensing electrode and is separated from the third pressure sensing layer, the third pressure unit includes: the first driving electrode; the third sensing electrode; and a fifth pressure sensing layer, which is in contact with the first driving electrode and the third sensing electrode, and the fifth pressure sensing layer is arranged between the first pressure sensing layer and the fourth pressure sensing layer.

[0026] The pressure sensor may include: a first pressure unit; a second pressure unit; and a third pressure unit, which is arranged between the first pressure unit and the second pressure unit, the first pressure unit includes: a first driving electrode; a first sensing electrode; a first pressure sensing layer, which is arranged to overlap with the first driving electrode and the first sensing electrode; and a second pressure sensing layer, which is in contact with the first driving electrode and the first sensing electrode and is separated from the first pressure sensing layer, the second pressure unit includes: the first driving electrode; the second sensing electrode; the third pressure sensing layer, which is arranged to overlap with the first driving electrode and the second sensing electrode; and a fourth pressure sensing layer, which is in contact with the first driving electrode and the second sensing electrode and is separated from the third pressure sensing layer, the third pressure unit includes: the first driving electrode; the third sensing electrode; and a fifth pressure sensing layer, which is in contact with the first driving electrode and the third sensing electrode, and the fifth pressure sensing layer is arranged between the second pressure sensing layer and the fourth pressure sensing layer.

[0027] According to a display device of another embodiment for solving the above-mentioned problem, the display device includes: a display panel, including a first side surface and a first lower surface, the first lower surface being connected to the first side surface and being a surface opposite to the display surface; a pressure sensor, arranged on the first lower surface of the display panel; and a lower bracket, including an upper surface facing the first lower surface of the display panel and a second side surface facing the first side surface of the display panel, wherein the pressure sensor is arranged between the first lower surface of the display panel and the upper surface of the lower bracket, and is arranged on the second side surface of the lower bracket, the second side surface of the lower bracket includes: a first sub-side surface; a second sub-side surface; and a third sub-side surface, which is recessed deeper than the first sub-side surface and the second sub-side surface, and the pressure sensor is arranged to overlap with the third sub-side surface and be embedded in the side surface portion formed by the first sub-side surface to the third sub-side surface.

[0028] The pressure sensor may include: a first substrate facing the second side surface of the lower support; a first pressure sensing layer arranged between the first substrate and the second side surface of the lower support; a first driving electrode arranged between the first pressure sensing layer and the second side surface of the lower support; and a first sensing electrode spaced apart from the first driving electrode, and there is a gap between the first pressure sensing layer and the first driving electrode and the first sensing electrode.

[0029] The pressure sensor may further include: a second substrate facing the first substrate and disposed between the second side surface of the lower support and the first driving electrode and the first sensing electrode, wherein the second substrate is attached to the lower support.

[0030] The first driving electrode and the first sensing electrode may be directly disposed on the second side surface of the lower support.

[0031] Specific items of other embodiments are included in the detailed description and drawings.

[0032] [Beneficial Effects]

[0033] In the display device according to one embodiment, a group of pressure sensors can be simplified.

[0034] In a pressure sensor and a display device according to one embodiment, the pressure sensor has a reduced appearance, so that a group of pressure sensors can be simplified.

[0035] The effects according to the exemplary embodiments are not limited to the above-exemplified contents, and more various effects are included in the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a perspective view showing a display device according to an embodiment.

[0037] Figure 2 yes Figure 1 An exploded perspective view of a display device.

[0038] Figure 3 is a schematic plan layout diagram of the pressure sensor and the lower bracket.

[0039] Figure 4 It is shown along Figure 1 A cross-sectional view of the example taken along line IV-IV'.

[0040] Figure 5 It is shown in detail Figure 4 A cross-sectional view of a display area of ​​a display panel in FIG.

[0041] Figure 6 is a plan view showing a pressure sensor according to one embodiment.

[0042] Figure 7 It is shown Figure 6 An example plan view of area A.

[0043] Figure 8 It is along Figure 7 A cross-sectional view taken along line Q1-Q1'.

[0044] Fig. 9 and Fig.10 2 are cross-sectional views respectively showing examples of a case where the user does not press the pressure sensor with a hand and a case where the user presses the pressure sensor with a hand.

[0045] Fig.11 is a cross-sectional view illustrating an example of a case where a user presses a pressure sensor without a hand according to another embodiment.

[0046] Fig.12 is a cross-sectional view illustrating an example of a case where a user presses a pressure sensor without a hand according to still another embodiment.

[0047] Fig.13 is a plan view showing a pressure sensor according to another embodiment.

[0048] Fig.14 It is along Fig.13 A cross-sectional view taken along line Q2-Q2'.

[0049] Fig.15 It is shown Fig.13 Circuit diagram of the pressure sensor.

[0050] Fig.16 is a plan view showing a pressure sensor according to still another embodiment.

[0051] Fig.17 is a plan view showing a pressure sensor according to still another embodiment.

[0052] Fig.18 is a plan view showing a pressure sensor according to still another embodiment.

[0053] Fig.19 is a plan view showing a pressure sensor according to still another embodiment.

[0054] Fig. 20 is a plan view showing a pressure sensor according to still another embodiment.

[0055] Fig.21 is a plan view showing a pressure sensor according to still another embodiment.

[0056] Fig. 22 is a plan view showing a pressure sensor according to still another embodiment.

[0057] Fig.23 is a plan view showing a pressure sensor according to still another embodiment.

[0058] Fig.24 is a plan view showing a pressure sensor according to still another embodiment.

[0059] Fig.25 is a plan view showing a pressure sensor according to still another embodiment.

[0060] Fig.26 is a plan view showing a pressure sensor according to still another embodiment.

[0061] Fig. 27 is a plan view showing a pressure sensor according to still another embodiment. DETAILED DESCRIPTION

[0062] The advantages and features of the embodiments of the present invention and methods of achieving them are described in detail in the accompanying drawings. Figure 1 The same will become clearer with reference to the embodiments described in detail below. However, the present invention is not limited to the embodiments disclosed below, and the present invention can be embodied in many different forms. The embodiments of the present invention are only used to make the disclosure of the present invention complete, in order to fully inform the scope of the invention to people with common knowledge in the technical field to which the present invention belongs, and the present invention is only limited by the scope of the rights.

[0063] When an element or layer is referred to as being on another element or layer, it includes being directly on another element or layer or having other elements or layers in between. Throughout the specification, the same reference numerals will refer to the same or similar parts. The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for illustrating the embodiments are examples, and the present invention is not limited to the matters disclosed in the drawings.

[0064] It will be understood that although the terms "first", "second", etc. are used herein to describe different components, these components should not be limited by these terms. The terms are only used to distinguish one component from another component. Therefore, without departing from the teachings herein, the first component discussed below may be referred to as the second component.

[0065] The various features in the multiple embodiments of the present invention may be partially or completely combined or combined with each other, and may be technically linked and driven in a variety of ways. The various embodiments may be implemented independently of each other or together in an associated relationship.

[0066] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0067] Figure 1 is a perspective view showing a display device according to an embodiment, Figure 2 yes Figure 1 An exploded perspective view of a display device, Figure 3 is a schematic plan layout diagram of the pressure sensor and the lower bracket, Figure 4 It is shown along Figure 1 A cross-sectional view of the example taken along line IV-IV', and Figure 5 It is shown in detail Figure 4 A cross-sectional view of a display area of ​​a display panel in FIG.

[0068] Reference Figures 1 to 5 According to one embodiment, a display device 1 includes a cover window 100, a touch sensing device 200, a touch circuit board 210, a display panel 300, a display circuit board 310, a panel lower member 400, a first pressure sensor 510, a second pressure sensor 520, a pressure sensing board 550, a lower bracket 800, a main circuit board 910 and a lower cover 900.

[0069] In this specification, the terms "upper", "top" and "upper surface" refer to the direction in which the cover window 100 is set relative to the display panel 300, that is, the Z direction, and the terms "lower", "bottom" and "lower surface" refer to the direction in which the panel lower member 400 is set relative to the display panel 300, that is, the direction opposite to the Z direction.

[0070] In a plan view, the display device 1 may be formed in a rectangular shape. Figure 1As shown in , the display device 1 may have a rectangular planar shape having a short side in a first direction (X direction) and a long side in a second direction (Y direction). An angle where the short side in the first direction (X direction) intersects the long side in the second direction (Y direction) may be rounded to have a predetermined curvature or formed as a right angle. The planar shape of the display device 1 is not limited to a rectangular shape, but may be formed in other polygonal shapes, a circular shape, or an elliptical shape.

[0071] The cover window 100 may be disposed above the display panel 300 to cover the upper surface of the display panel 300. Therefore, the cover window 100 may play a role in protecting the upper surface of the display panel 300. Figure 2 As shown in FIG, the cover window 100 may be attached to the touch sensing device 200 by an adhesive layer. The adhesive layer may be an optically clear adhesive film (OCA) or an optically clear resin (OCR).

[0072] The cover window 100 may include a light transmitting portion DA100 corresponding to the display area DA of the display panel 300 and a light blocking portion NDA100 corresponding to the non-display area NDA of the display panel 300. The light blocking portion NDA100 of the cover window 100 may be formed to be opaque. Alternatively, the light blocking portion NDA100 of the cover window 100 may be formed as a decorative layer having a pattern visible to a user when an image is not displayed. For example, a company logo such as "SAMSUNG" or various characters may be patterned on the light blocking portion NDA100 of the cover window 100.

[0073] The cover window 100 may be made of glass, sapphire and / or plastic. The cover window 100 may be formed to be rigid or flexible.

[0074] A touch sensing device 200 including a touch sensor for sensing a user's touch may be provided between the cover window 100 and the display panel 300. The touch sensing device 200 may be a device for sensing a user's touch position and may be implemented in a capacitive type such as a self-capacitive type or a mutual-capacitive type, or in an infrared type.

[0075] The touch sensing device 200 may be formed in a panel form or a film form. Alternatively, the touch sensing device 200 may be formed integrally with the display panel 300. For example, when the touch sensing device 200 is formed in a film form, the touch sensing device 200 may be formed integrally with a barrier film 306 for encapsulating the display panel 300.

[0076] The touch circuit board 210 may be attached to one side of the touch sensing device 200. Specifically, the touch circuit board 210 may be attached to a pad provided on one side of the touch sensing device 200 using an anisotropic conductive film. In addition, a touch connection portion may be provided on the touch circuit board 210 and may be connected to a connector of the display circuit board 310. The touch circuit board 210 may be a flexible printed circuit board or a chip on film.

[0077] The touch driver 220 may apply a touch driving signal to the touch sensing device 200 , sense a sensing signal from the touch sensing device 200 , and calculate a user's touch position by analyzing the sensing signal. The touch driver 220 may be formed as an integrated circuit and mounted on the touch circuit board 210 .

[0078] The display panel 300 may include a display area DA and a non-display area NDA. The display area DA is an area where an image is displayed, and the non-display area NDA may be an area where an image is not displayed and may be a peripheral area of ​​the display area DA. Figure 2 As shown in FIG. 1 , the non-display area NDA may be disposed to surround the display area DA, but the present invention is not limited thereto. The display area DA may overlap the light transmitting portion DA100 of the cover window 100 , and the non-display area NDA may overlap the light blocking portion NDA100 of the cover window 100 .

[0079] 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 organic light-emitting display panel using an organic light-emitting diode (OLED), a micro light-emitting display panel using a micro light-emitting diode (LED), or a quantum dot light-emitting display panel including a quantum dot LED. Hereinafter, the case where the display panel 300 is an organic light-emitting display panel will be mainly described.

[0080] The display area DA of the display panel 300 refers to a region where the light emitting element layer 304 is formed to display an image, and the non-display area NDA refers to a peripheral region of the display area DA.

[0081] like Figure 2 and Figure 5 As shown in , the display panel 300 may include a supporting substrate 301 , a flexible substrate 302 , a thin film transistor layer 303 , a light emitting element layer 304 , an encapsulation layer 305 , and a barrier film 306 .

[0082] The flexible substrate 302 is disposed on the supporting substrate 301. Each of the supporting substrate 301 and the flexible substrate 302 may include a polymer material having flexibility. For example, each of 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), polyacrylate, polyimide (PI), polycarbonate (PC), cellulose triacetate (CAT), cellulose acetate propionate (CAP), or a combination thereof.

[0083] The thin film transistor layer 303 is formed on the flexible substrate 302. The thin film transistor layer 303 includes a thin film transistor 335, a gate insulating film 336, an interlayer insulating film 337, a protective film 338, and a planarizing film 339.

[0084] The buffer film may be formed on the flexible substrate 302. The buffer film may be formed on the flexible substrate 302 to protect the thin film transistor 335 and the light emitting element from moisture passing through the support substrate 301 and the flexible substrate 302 that are susceptible to moisture penetration. The buffer film may be formed of a plurality of inorganic films stacked alternately. For example, the buffer film may be formed of silicon oxide (SiO x ) film, silicon nitride (SiN x ) film and a silicon oxynitride (SiON) film. The buffer film may be omitted.

[0085] The thin film transistor 335 is formed on the buffer film and includes an active layer 331 , a gate electrode 332 , a source electrode 333 , and a drain electrode 334 . Figure 5 The thin film transistor 335 shown in FIG. 1 is formed as a top gate type in which the gate electrode 332 is disposed on the active layer 331, but it should be noted that the present invention is not limited thereto. That is, the thin film transistor 335 may be formed as a bottom gate type in which the gate electrode 332 is disposed below the active layer 331 or a double gate type in which the gate electrode 332 is disposed at both the upper and lower portions of the active layer 331.

[0086] 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 blocking layer for blocking external light incident on the active layer 331 may be formed between the buffer film and the active layer 331.

[0087] The gate insulating film 336 may be formed on the active layer 331. The gate insulating film 336 may be formed of a material such as silicon oxide (SiO x ) film, silicon nitride (SiN x ) film or a multilayer film thereof.

[0088] The gate electrode 332 and the gate line may be formed on the gate insulating film 336. Each of the gate electrode 332 and the gate line may be formed as a single layer or a multilayer made of one selected from molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0089] The interlayer insulating film 337 may be formed on the gate electrode 332 and the gate line. The interlayer insulating film 337 may be formed of a material such as silicon oxide (SiO x ) film, silicon nitride (SiN x ) film or a multilayer film thereof.

[0090] The source electrode 333, the drain electrode 334, and the data line may be formed on the interlayer insulating film 337. Each of the source electrode 333 and the drain electrode 334 may be connected to the active layer 331 through a contact hole passing through the gate insulating film 336 and the interlayer insulating film 337. Each of the source electrode 333, the drain electrode 334, and the data line may be formed as a single layer or a multilayer made of one selected from molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0091] A protective film 338 for insulating the thin film transistor 335 may be formed on the source electrode 333, the drain electrode 334, and the data line. The protective film 338 may be formed of a material such as silicon oxide (SiO x ) film, silicon nitride (SiN x ) film or a multilayer film thereof.

[0092] The planarization film 339 may be formed on the protection film 338 to planarize a step difference caused by the thin film transistor 335. The planarization film 339 may be formed as an organic film made of acrylic resin, epoxy resin, phenol resin, polyamide resin, polyimide resin, or the like.

[0093] The light emitting element layer 304 may be formed on the thin film transistor layer 303. The light emitting element layer 304 includes a light emitting element and a pixel defining film 344.

[0094] The light emitting element and the pixel defining film 344 are formed on the planarization film 339. The light emitting element may be an organic light emitting element. In this case, the light emitting element may include an anode 341, a light emitting layer 342, and a cathode 343.

[0095] The anode 341 may be formed on the planarization film 339. The anode 341 may be connected to the drain electrode 334 of the thin film transistor 335 through a contact hole passing through the protection film 338 and the planarization film 339.

[0096] In order to separate pixels, a pixel defining film 344 may be formed on the planarization film 339 to cover the edge of the anode 341. That is, the pixel defining film 344 serves as a pixel defining film configured to define pixels. Each of the pixels represents a region where the anode 341, the light emitting layer 342, and the cathode 343 are sequentially stacked and holes from the anode 341 and electrons from the cathode 343 are recombined in the light emitting layer 342 to emit light.

[0097] The light-emitting layer 342 is formed on the anode 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 range of the red light may vary from about 620nm to about 750nm, and the peak wavelength range of the green light may vary from about 495nm to about 570nm. In addition, the peak wavelength range of the blue light may vary from about 450nm to about 495nm. Alternatively, the light-emitting layer 342 may be a white light-emitting layer emitting white light, and in this case, the light-emitting layer 342 may have a stacked form of a red light-emitting layer, a green light-emitting layer and a blue light-emitting layer, and the light-emitting layer 342 may be a common layer formed together in the pixel. In this case, the display panel 300 may also include separate color filters for displaying red, green and blue.

[0098] The light emitting layer 342 may include a hole transport layer, a light emitting layer, and an electron transport layer. In addition, the light emitting layer 342 may be formed in a tandem structure having two or more layers stacked, and in this case, a charge generation layer may be formed between the stacks.

[0099] In some embodiments, the display panel 300 may emit blue light or ultraviolet light having a wavelength range adjacent to the wavelength range of blue light, and may further include a light conversion pattern disposed in each pixel and disposed above the light emitting layer 342. The light conversion pattern may include a first wavelength conversion pattern for converting emission light (e.g., blue light or ultraviolet light) emitted from the light emitting layer 342 into red light, a second wavelength conversion pattern for converting emission light (e.g., blue light or ultraviolet light) emitted from the light emitting layer 342 into green light, and a light-transmitting pattern for transmitting emission light (e.g., blue light or ultraviolet light) emitted from the light emitting layer 342 without change.

[0100] The first wavelength conversion pattern may include a first base resin and a first wavelength converter dispersed in the first base resin, and may further include a first scatterer dispersed in the first base resin.

[0101] The first wavelength converter may convert or shift the peak wavelength of the incident light to another specific peak wavelength. Examples of the first wavelength converter may include quantum dots, quantum rods, or phosphors that convert emitted light (eg, blue light or ultraviolet light) into red light having a red wavelength range.

[0102] The second wavelength conversion pattern may include a second base resin and a second wavelength converter dispersed in the second base resin, and may further include a second scatterer dispersed in the second base resin.

[0103] The second wavelength converter may convert or shift the peak wavelength of the incident light to another specific peak wavelength. Examples of the second wavelength converter may include quantum dots, quantum rods, or phosphors that convert emitted light (eg, blue light or ultraviolet light) into green light having a green wavelength range.

[0104] The light-transmitting pattern may include a third base resin and a third scatterer dispersed in the third base resin.

[0105] In some embodiments, the light emitting layer 342 may include a base resin and a wavelength converter dispersed in the base resin. That is, the red light emitting layer may include a first base resin and a first wavelength converter, the green light emitting layer may include a second base resin and a second wavelength converter, and the blue light emitting layer may include a third base resin. In some embodiments, each of the red light emitting layer, the green light emitting layer, and the blue light emitting layer may further include a scatterer.

[0106] In some embodiments, the light emitting layer 342 may include an inorganic material. That is, the light emitting layer 342 may be an LED, and specifically, may be an inorganic LED having a micrometer-scale or nanometer-scale size, and may be made of an inorganic material. The inorganic LED may be aligned between two electrodes in which polarity is formed by forming an electric field in a specific direction between two electrodes facing each other. Due to the electric field formed between the two electrodes, the LED may be aligned between the two electrodes.

[0107] The cathode 343 is formed on the light emitting layer 342. The cathode 343 may be formed to cover the light emitting layer 342. The cathode 343 may be a common layer commonly formed in the pixel.

[0108] When the light emitting element layer 304 is formed as a top emission type that emits light upward, the anode 341 can be made of a conductive (metal) material with high reflectivity, and for example, can include a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and indium tin oxide (ITO) (ITO / Al / ITO), a silver palladium copper (APC) alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd) and copper (Cu). In addition, the cathode 343 can be made of a light-transmitting transparent conductive material (TCO) such as ITO or indium zinc oxide (IZO) or a semi-transmissive conductive (metal) material such as magnesium (Mg), silver (Ag) or an alloy of magnesium (Mg) and silver (Ag). When the cathode 343 is made of a semi-transmissive conductive (metal) material, the light output efficiency can be improved through the microcavity.

[0109] When the light emitting element layer 304 is formed as a bottom emission type that emits light downward, the anode 341 can be made of a transparent conductive material (TCO) such as ITO or IZO, or can be made of a semi-transmissive conductive (metal) material such as magnesium (Mg), silver (Ag) or an alloy of magnesium (Mg) and silver (Ag). The cathode 343 can be made of a conductive material with high reflectivity such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), a silver palladium copper (APC) alloy, and a stacked structure of an APC alloy and ITO (ITO / APC / ITO). When the anode 341 is made of a semi-transmissive conductive (metal) material, the light output efficiency can be improved through the microcavity.

[0110] The encapsulation layer 305 is formed on the light emitting element layer 304. The encapsulation layer 305 is used to prevent oxygen or moisture from penetrating into the light emitting layer 342 and the cathode 343. To this end, the encapsulation layer 305 may include at least one inorganic film. The inorganic film may be made of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, or titanium oxide. In addition, the encapsulation layer 305 may also include at least one organic film. The organic film may be formed to have a sufficient thickness to prevent foreign matter from passing through the encapsulation layer 305 into the light emitting layer 342 and the cathode 343. The organic film may include any one of epoxy resin, acrylate, and polyurethane acrylate.

[0111] The barrier film 306 is disposed on the encapsulation layer 305. The barrier film 306 is disposed to cover the encapsulation layer 305 to protect the light emitting element layer 304 from oxygen or moisture. The barrier film 306 may be formed integrally with the touch sensing device 200.

[0112] A polarizing film may be additionally attached to the upper surface of the display panel 300 to prevent visibility from being reduced due to reflection of external light.

[0113] The display circuit board 310 may be attached to one side of the display panel 300. Specifically, the display circuit board 310 may be attached to a pad provided on one side of the display panel 300 using an anisotropic conductive film.

[0114] like Figure 2 The touch circuit board 210 and the display circuit board 310 shown in the figure can be bent downward from the upper part of the display panel 300. The display circuit board 310 can be connected to the touch connection part of the touch circuit board 210 through a connector. Alternatively, the display circuit board 310 may include a pad corresponding to the connector instead of the connector, and in this case, the display circuit board 310 may be connected to the touch circuit board 210 using an anisotropic conductive film. The display circuit board 310 can be connected to the main circuit board 910 through another connector 330.

[0115] The display driver 320 outputs signals and voltages for driving the display panel 300 through the display circuit board 310. The display driver 320 may be formed as an integrated circuit and mounted on the display circuit board 310, but the present invention is not limited thereto. For example, the display driver 320 may be attached to one side of the display panel 300.

[0116] The panel lower member 400 may be disposed on the lower surface of the display panel 300. The panel lower member 400 may include a heat dissipation layer configured to effectively dissipate heat from the display panel 300, an electromagnetic wave shielding layer configured to shield electromagnetic waves, a light blocking layer configured to block light incident from the outside, a light absorbing layer configured to absorb light incident from the outside, and a buffer layer configured to absorb impact from the outside.

[0117] Specifically, the panel lower member 400 may include a light absorbing member, a buffer member, and a heat dissipating member.

[0118] The light absorbing member may be disposed under the display panel 300. The light absorbing member prevents transmission of light to prevent elements disposed under the light absorbing member (ie, the first and second pressure sensors 510 and 520) from being visible above the display panel 300. The light absorbing member may include a light absorbing material such as a black pigment or dye.

[0119] The buffer member may be disposed below the light absorbing member. The buffer member absorbs external impact to prevent the display panel 300 from being damaged. The buffer member may include a single layer or multiple layers. For example, the buffer member may be made of a polymer resin such as polyurethane, polycarbonate, polypropylene, or polyethylene, or may be made of a material having elasticity such as a sponge formed of foamed rubber, a polyurethane-based material, or an acrylic-based material. The buffer member may be a buffer layer.

[0120] The heat dissipation member may be disposed below the buffer member. The heat dissipation member may include at least one heat dissipation layer. For example, the heat dissipation member may include a first heat dissipation layer including graphite or carbon nanotubes, etc. and a second heat dissipation layer formed as a thin film of copper, nickel, ferrite or silver that can shield electromagnetic waves and has excellent thermal conductivity.

[0121] The first pressure sensor 510 may be disposed on a side surface of the lower bracket 800. Specifically, the first pressure sensor 510 may be disposed on an inner side surface of the lower bracket 800. Therefore, the first pressure sensor 510 may sense pressure applied to the side surface of the lower bracket 800.

[0122] More specifically, the display panel 300 may include a first side surface facing the side of the lower bracket 800 and a first lower surface connected to the first side surface of the display panel 300 and being a surface opposite to the display surface. The first pressure sensor 510 may be disposed to overlap the first lower surface of the display panel 300 in the thickness direction.

[0123] The second pressure sensor 520 may be disposed under the panel lower member 400. The second pressure sensor 520 may be disposed close to one side of the panel lower member 400. The second pressure sensor 520 may sense pressure applied to the light transmitting portion DA100 of the cover window 100.

[0124] The first pressure sensor 510 and the second pressure sensor 520 may be used as substitutes for physical buttons of the display device 1 .

[0125] For example, the second pressure sensor 520 provided on the lower portion of the panel lower member 400 may be used as a substitute for the power button of the display device 1, and the first pressure sensor 510 provided on the inner side surface of the lower bracket 800 may be used as a substitute for the sound control button of the display device 1. That is, when the second pressure is sensed by the second pressure sensor 520, the screen of the display device 1 may be turned off. Alternatively, when the first pressure higher than the second pressure is sensed by the second pressure sensor 520 or the second pressure is continuously sensed for a predetermined period of time, a screen for selecting shutdown of the display device 1 may be displayed. In addition, when the third pressure is sensed by the first pressure sensing unit of the first pressure sensor 510 provided on the inner side surface of the lower bracket 800, the sound of the display device 1 may be weakened, and when the fourth pressure is sensed by the second pressure sensing unit of the first pressure sensor 510 provided on the inner side surface of the lower bracket 800, the sound of the display device 1 may be enhanced.

[0126] The first pressure sensor 510 and the second pressure sensor 520 will be described in detail below.

[0127] The lower bracket 800 may be disposed under the panel lower member 400. The lower bracket 800 may include synthetic resin, metal, or both.

[0128] Specifically, the lower bracket 800 may be disposed to surround the cover window 100, the touch sensing device 200, the display panel 300, the panel lower member 400, the first pressure sensor 510, the second pressure sensor 520, the touch circuit board 210, and the display circuit board 310, etc. In addition, the first pressure sensor 510 is disposed on one side of the side surface of the lower bracket 800 in the first direction (X direction) to support the first pressure sensor 510 by the side surface of the lower bracket 800, so that the first pressure sensor 510 can sense the pressure applied to the side surface of the lower bracket 800.

[0129] The main circuit board 910 may be disposed below the lower bracket 800. The main circuit board 910 may be connected to another connector of the display circuit board 310 through a cable connected to the main connector 920. Thus, the main circuit board 910 may be electrically connected to the display circuit board 310 and the touch circuit board 210. In addition, when the pressure sensing board 550 is connected to the display circuit board 310 or the touch circuit board 210, the main circuit board 910 may be electrically connected to the pressure sensing board 550. The main circuit board 910 may be a printed circuit board or a flexible printed circuit board.

[0130] The main circuit board 910 may include a main processor 990 and a camera device 960. Figure 2 , the main processor 990, the camera device 960, and the main connector 920 are mounted on one surface of the main circuit board 910 facing the lower bracket 800, but the present invention is not limited thereto. That is, the main processor 990, the camera device 960, and the main connector 920 may be mounted on another surface of the main circuit board 910 facing the lower cover 900.

[0131] The main processor 990 can control all functions of the display device 1. For example, the main processor 990 can output image data to the display driver 320 mounted on the display circuit board 310 so that the display panel 300 can display an image. In addition, the main processor 990 can receive touch data from the touch driver 220 and determine the user's touch position, and then execute the application indicated by the icon displayed at the user's touch position. In addition, the main processor 990 can receive touch data from the pressure sensing part FD (refer to Figure 6 ) receives pressure sensing data and can control the output of the main screen, control the volume of the display device 1, or implement tactile sensation according to the pressure sensing data. The main processor 990 may be an application processor, a central processing unit, or a system chip formed as an integrated circuit.

[0132] The camera device 960 processes image frames such as still images or videos obtained by an image sensor in a camera mode and outputs the processed image frames to the main processor 990 .

[0133] In addition, the main circuit board 910 may also be equipped with a mobile communication module capable of transmitting wireless signals to at least one of a base station, an external terminal, and a server on a mobile communication network and receiving wireless signals from at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data associated with the transmission and reception of a voice signal, a video call signal, or a text / multimedia message. In addition, the main circuit board 910 may also be equipped with a sound output device capable of outputting sound and a vibration device capable of generating vibrations for tactile realization.

[0134] The lower cover 900 may be disposed under the lower bracket 800 and the main circuit board 910. The lower cover 900 may form a lower exterior of the display device 1. The lower cover 900 may include plastic and / or metal.

[0135] Reference Figure 2 , Figure 3 and Figure 4 The lower bracket 800 may include a bracket side portion 800a disposed on the side surfaces of the first pressure sensor 510, the cover window 100, the touch sensing device 200, the touch circuit board 210, the display panel 300, the display circuit board 310 and the panel lower member 400 and may include a lower supporting portion 800C supporting the first pressure sensor 510, the cover window 100, the touch sensing device 200, the touch circuit board 210, the display panel 300, the display circuit board 310 and the panel lower member 400 starting from the lower portion of the bracket side portion 800a.

[0136] The bracket side portion 800a is physically connected to the lower support portion 800C. The lower support portion 800C may include a first support portion 800C1 disposed in the central region, a second support portion 800C2 located at one side of the first support portion 800C1 in the first direction (X direction), and a third support portion 800C3 located at the other side of the first support portion 800C1 in the first direction (X direction). Each of the second support portion 800C2 and the third support portion 800C3 may overlap with the first pressure sensor 510, the cover window 100, the touch sensing device 200, the touch circuit board 210, the display panel 300, the display circuit board 310, and the panel lower member 400 in the thickness direction, while the first support portion 800C1 may not overlap with the first pressure sensor 510 in the thickness direction.

[0137] The lower support portion 800C may include an upper surface facing the display panel 300 above the lower support portion 800C and a lower surface as an opposite surface to the upper surface, and the upper surface of the first support portion 800C1 may protrude further in the third direction (Z direction) than the upper surface of each of the second support portion 800C2 and the third support portion 800C3 in the third direction (Z direction). In other words, the upper surface of each of the second support portion 800C2 and the third support portion 800C3 may be more recessed downward in the third direction (Z direction) than the upper surface of the first support portion 800C1 in the third direction (Z direction). The first pressure sensor 510 may be provided on the recessed upper surface of each of the second support portion 800C2 and the third support portion 800C3.

[0138] The bracket side portion 800 a may include a plurality of sides and be used to support the first pressure sensor 510 , and the first pressure sensor 510 may be mounted and attached to the bracket side portion 800 a .

[0139] The bracket side portion 800a may include a first sub-side portion 800a1 and a second sub-side portion 800a2 having different widths in the first direction (X direction). The width of the first sub-side portion 800a1 in the first direction (X direction) may be greater than the width of the second sub-side portion 800a2 in the first direction (X direction). Figure 3 As shown in FIG, the first sub-side portions 800a1 may be spaced apart from each other by the second sub-side portions 800a2.

[0140] The first sub-sides 800a1 spaced apart from each other may be referred to as other components. That is, the sub-side located on the upper side of the second sub-side 800a2 in the second direction (Y direction) may be the first sub-side, and the sub-side located on the lower side of the second sub-side 800a2 in the second direction (Y direction) may be the third sub-side. The first sub-side and the third sub-side may each be physically connected to the adjacent second sub-side 800a2.

[0141] The bracket side 800a may include a first surface facing the first pressure sensor 510 and a second surface as a surface opposite to the first surface. The first surface of the bracket side 800a at the first sub-side 800a1 may protrude more inward than the first surface of the bracket side 800a at the second sub-side 800a2.

[0142] That is, in other words, the first surface of the lower bracket 800 may include a first sub-side surface, a second sub-side surface, and a third sub-side surface that is recessed deeper than the first sub-side surface and the second sub-side surface, and the first pressure sensor 510 may be disposed to overlap with the third sub-side surface in the first direction (X direction) and may be embedded in the bracket side portion 800a formed by the first sub-side portion to the third sub-side portion.

[0143] Hereinafter, the pressure sensor will be described in detail. Hereinafter, the above-mentioned first pressure sensor 510 will be mainly described as a pressure sensor, but it is obvious that the following description may be specifically applied to the case of the second pressure sensor 520.

[0144] Figure 6 is a plan view showing a pressure sensor according to one embodiment, Figure 7 It is shown Figure 6 An example plan view of area A, and Figure 8 It is along Figure 7 A cross-sectional view taken along line Q1-Q1'.

[0145] Reference Figures 6 to 8 In a plan view, the first pressure sensor 510 may have a shape extending in one direction, for example, the second direction (Y direction), and in this case, the first pressure sensor 510 may have a length greater than a width in the extending direction. However, the shape of the first pressure sensor 510 is not limited thereto and may vary depending on the location where the first pressure sensor 510 is applied.

[0146] The first pressure sensor 510 includes a first substrate SUB1, a second substrate SUB2, a driving line TL, first to p-th sensing lines RL1 to RLp, a driving pad TP, first to p-th sensing pads RP1 to RPp, and first to p-th pressure sensing units CE1 to CEp, where p is an integer greater than or equal to 2.

[0147] The first substrate SUB1 and the second substrate SUB2 are disposed to face each other.

[0148] The pressure sensing units CE1 to CEp are disposed between the first substrate SUB1 and the second substrate SUB2. The driving lines TL, the first to pth sensing lines RL1 to RLp, the driving pads TP, and the first to pth sensing pads RP1 to RPp are disposed on one surface of the first substrate SUB1 facing the second substrate SUB2.

[0149] Each of the pressure sensing units CE1 to CEp can independently sense the pressure of a corresponding position. Figure 6 The pressure sensing units CE1 to CEP may be arranged in a row, but the present invention is not limited thereto. If necessary, the pressure sensing units CE1 to CEP may be arranged in a plurality of rows. Figure 6 As shown in , the pressure sensing units CE1 to CEp may be disposed to be spaced apart from each other by a predetermined interval or may be continuously disposed.

[0150] The pressure sensing units CE1 to CEp may have different areas depending on the purpose. For example, when the pressure sensing units CE1 to CEp are used as physical buttons, such as Figure 1 In the volume control button provided on the side surface of the display device 1 as shown in FIG, the pressure sensing units CE1 to CEp may be formed to have an area similar to that of the physical button. In addition, when the pressure sensing units CE1 to CEp are used to detect the pressure applied to the volume control button as shown in FIG. Figure 1 When the pressure of the front surface of the display device 1 shown in FIG. 1 is detected, the pressure sensing units CE1 to CEp may be formed to have a size corresponding to the pressure sensing area.

[0151] Each of the pressure sensing units CE1 to CEp may be connected to at least one driving line and at least one sensing line. Figure 6 As shown in , the pressure sensing units CE1 to CEp are commonly connected to one driving line TL, and the pressure sensing units CE1 to CEp may be connected to the sensing lines RL1 to RLp, respectively. The first pressure sensing unit CE1 may be connected to the driving line TL and the first sensing line RL1, and the second pressure sensing unit CE2 may be connected to the driving line TL and the second sensing line RL2. In addition, the third pressure sensing unit CE3 may be connected to the driving line TL and the third sensing line RL3, and the p-th pressure sensing unit CEp may be connected to the driving line TL and the p-th sensing line RLp.

[0152] The driving line TL may be connected to the driving pad TP, and the first to p-th sensing lines RL1 to RLp may be connected to the first to p-th sensing pads RP1 to RPp, respectively. The first sensing line RL1 may be connected to the first sensing pad RP1, the second sensing line RL2 may be connected to the second sensing pad RP2, the third sensing line RL3 may be connected to the third sensing pad RP3, and the p-th sensing line RLp may be connected to the p-th sensing pad RPp. The driving pad TP and the first to p-th sensing pads RP1 to RPp may be disposed on one side of the first substrate SUB1 and connected to the pressure sensing plate 550 through an anisotropic conductive film.

[0153] The pressure sensing plate 550 may include a pressure sensing part FD. The pressure sensing part FD may apply a driving voltage to the driving line TL through the driving pad TP, and sense a current value or a voltage value from the sensing lines RL1 to RLp through the sensing pads RP1 to RPp, thereby sensing the pressure applied to the pressure sensing units CE1 to CEp. The pressure sensing part FD may be mounted on the pressure sensing plate 550 or on another circuit board connected to the pressure sensing plate 550. When the pressure sensing part FD is mounted on another circuit board connected to the pressure sensing plate 550, the pressure sensing part FD may be integrated with a driver that performs a different function. For example, the pressure sensing part FD may be integrated with a Figure 2The touch driver 220 mounted on the touch circuit board 210 is integrated as shown in FIG.

[0154] The first pressure sensor 510 may further include a bonding layer disposed between the first substrate SUB1 and the second substrate SUB2 and bonding the first substrate SUB1 to the second substrate SUB2. The bonding layer may be formed of a pressure-sensitive adhesive layer or an adhesive layer. The bonding layer may be disposed along the periphery of the first substrate SUB1 and the second substrate SUB2. In one embodiment, the bonding layer may completely surround the edges of the first substrate SUB1 and the second substrate SUB2 and be used to seal the interior of the first pressure sensor 510. In addition, the bonding layer may be used as a spacer for always maintaining a gap between the first substrate SUB1 and the second substrate SUB2. The bonding layer may not overlap with the drive line TL, the sensing lines RL1 to RLp, the pressure sensing units CE1 to CEp, the drive pads TP, and the sensing pads RP1 to RPp.

[0155] During the process of bonding the first substrate SUB1 and the second substrate SUB2, the bonding layer may be first bonded to one surface of the first substrate SUB1 or the second substrate SUB2, and then bonded to one surface of the other substrate. As another example, a bonding layer may be provided on one surface of each of the first substrate SUB1 and the second substrate SUB2, and in the process of bonding the first substrate SUB1 and the second substrate SUB2, the bonding layer of the first substrate SUB1 and the bonding layer of the second substrate SUB2 may be bonded to each other.

[0156] Each of the pressure sensing cells CE1 to CEp includes a driving connection electrode TCE, a sensing connection electrode, a first driving electrode TE1, a first sensing electrode RE1 and a first pressure sensing layer PSL1. The sensing connection electrode may be a corresponding one of the first sensing connection electrode RCE1, the second sensing connection electrode RCE2, ..., and the pth sensing connection electrode.

[0157] The driving connection electrodes TCE, the sensing connection electrodes RCE1 / RCE2 , the first driving electrodes TE1 , and the first sensing electrodes RE1 are disposed on the first substrate SUB1 facing the second substrate SUB2 .

[0158] The driving connection electrode TCE is connected to the driving line TL and the first driving electrode TE1. Specifically, at both ends of the driving connection electrode TCE in the length direction (X direction), the driving connection electrode TCE is connected to the driving line TL. The first driving electrode TE1 may branch from the driving connection electrode TCE in the width direction (Y direction) of the driving connection electrode TCE.

[0159] The sensing connection electrode is connected to one of the sensing lines RL1 to RLp and the first sensing electrode RE1. Specifically, at one end of the sensing connection electrode in the length direction (X direction), the sensing connection electrode is connected to one of the sensing lines RL1 to RLp. The first sensing electrode RE1 may branch from the sensing connection electrode RCE1 / RCE2 in the width direction (Y direction) of the sensing connection electrode RCE1 / RCE2.

[0160] The first driving electrode TE1 and the first sensing electrode RE1 may be disposed on the same layer. The first driving electrode TE1 and the first sensing electrode RE1 may be made of the same material. For example, each of the first driving electrode TE1 and the first sensing electrode RE1 may include a conductive material such as silver (Ag) or copper (Cu). The first driving electrode TE1 and the first sensing electrode RE1 may be formed on the first substrate SUB1 by a screen printing method.

[0161] The first drive electrode TE1 and the first sensing electrode RE1 are disposed adjacent to each other but are not connected to each other. The first drive electrode TE1 may be disposed in parallel to the first sensing electrode RE1. The first drive electrode TE1 and the first sensing electrode RE1 may be alternately disposed in the length direction (X direction) of the drive connection electrode TCE and the sensing connection electrode RCE1 / RCE2. That is, they may be repeatedly disposed in the length direction (X direction) of the drive connection electrode TCE and the sensing connection electrode RCE1 / RCE2 in the order of the first drive electrode TE1, the first sensing electrode RE1, the first drive electrode TE1, and the first sensing electrode RE1.

[0162] The first pressure sensing layer PSL1 is disposed on one surface of the second substrate SUB2 facing the first substrate SUB1. The first pressure sensing layer PSL1 may be disposed to overlap the first driving electrode TE1 and the first sensing electrode RE1.

[0163] The first pressure sensing layer PSL1 may include a pressure sensitive material and a polymer resin on which the pressure sensitive material is disposed. The pressure sensitive material may be metal particles (or metal nanoparticles) such as nickel, aluminum, titanium, tin, and copper. For example, the first pressure sensing layer PSL1 may be a quantum tunneling composite (QTC).

[0164] When no pressure is applied to the second substrate SUB2 of the first pressure sensor 510 in the third direction (Z direction), there are gaps between the first pressure sensing layer PSL1 and the first driving electrode TE1 and between the first pressure sensing layer PSL1 and the first sensing electrode RE1. That is, when no pressure is applied to the second substrate SUB2 of the first pressure sensor 510, the first pressure sensing layer PSL1 is spaced apart from the first driving electrode TE1 and the first sensing electrode RE1.

[0165] When pressure is applied to the second substrate SUB2 of the first pressure sensor 510 in the third direction (Z direction), the first pressure sensing layer PSL1 contacts the first driving electrode TE1 and the first sensing electrode RE1. Therefore, the first driving electrode TE1 and the first sensing electrode RE1 may be physically connected through the first pressure sensing layer PSL1, and the first pressure sensing layer PSL1 may act as a resistor.

[0166] Hereinafter, the embedding of the first pressure sensor 510 into the lower bracket 800 (see Figure 3 ) of the bracket side 800a (refer to Figure 3 ) in the structure.

[0167] Fig. 9 and Fig.10 2 are cross-sectional views respectively showing examples of a case where the user does not press the pressure sensor with a hand and a case where the user presses the pressure sensor with a hand.

[0168] Reference Fig. 9 and Fig.10 , describes the above-mentioned first pressure sensor 510 embedded in the lower bracket 800 (refer to Figure 3 ) in the side portion 800a of the bracket. Fig. 9 As shown in the figure, the first substrate SUB1 can be disposed on the second sub-side portion 800a2 of the bracket side portion 800a. That is, the first substrate SUB1 can be disposed on the first surface of the second sub-side portion 800a2 of the bracket side portion 800a. Although not shown in the figure, the pressure sensor coupling member can also be disposed between the first substrate SUB1 and the first surface of the second sub-side portion 800a2. The pressure sensor coupling member can be used to couple the first surfaces of the first substrate SUB1 and the second sub-side portion 800a2 to each other.

[0169] The first driving electrodes TE1 and the first sensing electrodes RE1 may be disposed on the first substrate SUB1. As described above, the first driving electrodes TE1 and the first sensing electrodes RE1 may be spaced apart from each other and may be alternately arranged along one direction. The first driving electrodes TE1 and the first sensing electrodes RE1 may be formed on the first substrate SUB1 by a screen printing method.

[0170] The first pressure sensing layer PSL1 may be disposed over the first driving electrode TE1 and the first sensing electrode RE1. That is, the first driving electrode TE1 and the first sensing electrode RE1 may be disposed between the first pressure sensing layer PSL1 and the first substrate SUB1.

[0171] When pressure is not applied to the first substrate SUB1 of the first pressure sensor 510 in the direction of the pressing bracket side 800a, there are gaps between the first pressure sensing layer PSL1 and the first driving electrode TE1 and between the first pressure sensing layer PSL1 and the first sensing electrode RE1. That is, when pressure is not applied to the first substrate SUB1 of the first pressure sensor 510, the first pressure sensing layer PSL1 is spaced apart from the first driving electrode TE1 and the first sensing electrode RE1.

[0172] The second substrate SUB2 may be disposed on the first pressure sensing layer PSL1. The second substrate SUB2 may be opposite to the first substrate SUB1. That is, the first pressure sensing layer PSL1 may be disposed between the second substrate SUB2 and the first driving electrode TE1 and the first sensing electrode RE1. The first pressure sensing layer PSL1 may be directly disposed on one surface of the second substrate SUB2 facing the first substrate SUB1.

[0173] When pressure is applied to the first substrate SUB1 of the first pressure sensor 510 in the direction of pressing the bracket side portion 800a, as shown in FIG. Fig.10 As shown in , the first driving electrode TE1 and the first sensing electrode RE1 are in contact with the first pressure sensing layer PSL1. Therefore, the first driving electrode TE1 and the first sensing electrode RE1 may be physically connected through the first pressure sensing layer PSL1, and the first pressure sensing layer PSL1 may act as a resistor.

[0174] In one embodiment, since the first substrate SUB1 is attached to the lower support 800 (refer to Figure 3 ), so when pressure is applied to the first substrate SUB1 of the first pressure sensor 510 in a direction in which the bracket side portion 800a is pressed, the first substrate SUB1 moves inward together with the first driving electrode TE1 and the first sensing electrode RE1, but the second substrate SUB2 may not substantially move inward. On the contrary, when the second substrate SUB2 moves inward along with the movement of the first substrate SUB1, the first driving electrode TE1, and the first sensing electrode RE1, even when pressure is applied by the bracket side portion 800a, the contact area between the first driving electrode TE1 and the first sensing electrode RE1 and the first pressure sensing layer PSL1 may be reduced.

[0175] In addition, when pressure is applied to the first substrate SUB1 of the first pressure sensor 510 in a direction of pressing the bracket side portion 800a, physical damage may be generated on the second substrate SUB2 due to the pressure.

[0176] Therefore, the first substrate SUB1 and the second substrate SUB2 may have different constituent materials. That is, compared with the first substrate SUB1, the second substrate SUB2 may further include a rigid material.

[0177] For example, each of the first substrate SUB1 and the second substrate SUB2 may include a polyethylene-based material, a polyimide-based material, a polycarbonate-based material, a polysulfone-based material, a polyacrylate-based material, a polystyrene-based material, a polyvinyl chloride-based material, a polyvinyl alcohol-based material, a polynorbornene-based material, or a polyester-based material. In one embodiment, each of the first substrate SUB1 and the second substrate SUB2 may include a polyethylene terephthalate (PET) film or a polyimide film.

[0178] Examples of the rigid material include thermosetting resins such as epoxy resins, polyetherketone-based thermoplastic resins, reinforcing materials such as reinforcements, and stainless steel, etc. That is, the first substrate SUB1 may further include at least one of the above-mentioned examples of the rigid material.

[0179] Therefore, when pressure is applied through the support side portion 800a, a phenomenon in which the second substrate SUB2 is pushed inward by the pressure can be prevented, and furthermore, physical damage can be prevented in advance.

[0180] Hereinafter, a display device 1 according to an embodiment (refer to Figure 2 In the following embodiments, components identical to those described above will be assigned the same reference numerals, and repeated descriptions of the same components will be omitted or simplified herein.

[0181] Fig.11 is a cross-sectional view illustrating an example of a case where a user presses a pressure sensor without a hand according to another embodiment.

[0182] Reference Fig.11 The first pressure sensor 510_1 of the display device according to this embodiment is Fig. 9 The first pressure sensor 510 of the embodiment is different in that the first driving electrode TE1 and the first sensing electrode RE1 can be directly formed on the lower support 800 (refer to Figure 3 ) and is directly embedded in the lower bracket 800 (refer to Figure 3 )middle.

[0183] More specifically, the first driving electrode TE1 and the first sensing electrode RE1 according to the present embodiment may be directly formed on the lower support 800 (refer to Figure 3 ) on the second sub-side portion 800a2 of the bracket side portion 800a. For example, as described above, the first driving electrode TE1 and the first sensing electrode RE1 may be directly formed on the lower bracket 800 (refer to Figure 3 ) on the second sub-side portion 800a2 of the bracket side portion 800a.

[0184] Fig.12is a cross-sectional view illustrating an example of a case where a user presses a pressure sensor without a hand according to still another embodiment.

[0185] The first pressure sensor 510_2 of the display device according to this embodiment is similar to the above-mentioned Fig. 9 The first pressure sensor 510 in the described embodiment is different in that the first pressure sensor 510_2 is mounted on the lower bracket 800 (refer to Figure 3 )superior.

[0186] More specifically, the second substrate SUB2 may be disposed on the second sub-side portion 800a2 of the support side portion 800a of the lower support 800, the second substrate SUB2 may be disposed between the first pressure sensing layer PSL1 and the second sub-side portion 800a2, the first substrate SUB1 may be disposed to face the second substrate SUB2, and the first driving electrode TE1 and the first sensing electrode RE1 may be disposed between the first substrate SUB1 and the first pressure sensing layer PSL1. That is, the second substrate SUB2 may be directly disposed on the first surface of the second sub-side portion 800a2.

[0187] Fig.13 is a plan view showing a pressure sensor according to another embodiment, Fig.14 It is along Fig.13 A cross-sectional view taken along line Q2-Q2', and Fig.15 It is shown Fig.13 The circuit diagram of the pressure sensor. Fig.13 and Fig.14 The described embodiment shows that the first pressure sensor includes only the first pressure sensing unit CE1_1 and the second pressure sensing unit CE2_1, that is, Figure 6 The first pressure sensor 510 includes only the first pressure sensing unit CE1 and the second pressure sensing unit CE2, but the present invention is not limited thereto, and it is obvious that the first pressure sensor 510 may include a plurality of pressure sensing units CE1 to CEp (refer to Figure 6 ).

[0188] Reference Figures 13 to 15 , and according to Figure 7 The embodiment of the present invention is different in that each of the first pressure sensing unit CE1_1 and the second pressure sensing unit CE2_1 further includes a second driving electrode TE2, a second sensing electrode RE2 and a second pressure sensing layer PSL2.

[0189] More specifically, the second driving electrodes TE2 and the second sensing electrodes RE2 are disposed on one surface of the first substrate SUB1 facing the second substrate SUB2. Fig.13 and Fig.14In each of the first pressure sensing unit CE1_1 and the second pressure sensing unit CE2_1, one second driving electrode TE2 and one second sensing electrode RE2 are shown, but Fig.13 and Fig.14 That is, the plurality of second driving electrodes TE2 and the plurality of second sensing electrodes RE2 may be disposed on one surface of the first substrate SUB1 facing the second substrate SUB2.

[0190] The second driving electrode TE2 may branch from the driving connection electrode TCE in the width direction (Y direction) of the driving connection electrode TCE. The second driving electrode TE2 may be disposed in parallel with the first driving electrode TE1.

[0191] The second sensing electrodes RE2 may be branched from the sensing connection electrodes RCE1 / RCE2 in the width direction (Y direction) of the sensing connection electrodes RCE1 / RCE2 , respectively. The second sensing electrodes RE2 may be disposed in parallel with the first sensing electrodes RE1 .

[0192] The second drive electrode TE2 and the second sensing electrode RE2 may be disposed on the same layer as the first drive electrode TE1 and the first sensing electrode RE1. The second drive electrode TE2 and the second sensing electrode RE2 may be made of the same material as the first drive electrode TE1 and the first sensing electrode RE1. For example, each of the second drive electrode TE2 and the second sensing electrode RE2 may include a conductive material such as silver (Ag) or copper (Cu). The second drive electrode TE2 and the second sensing electrode RE2 may be formed on the first substrate SUB1 by a screen printing method.

[0193] The second driving electrode TE2 and the second sensing electrode RE2 are disposed adjacent to each other but are not connected to each other. The second driving electrode TE2 may be disposed in parallel with the second sensing electrode RE2.

[0194] The second driving electrode TE2 and the second sensing electrode RE2 may not overlap with the first pressure sensing layer PSL1. The first sensing electrode RE1 may be disposed between the second driving electrode TE2 and the first driving electrode TE1. In this case, the distance between the second driving electrode TE2 and the second sensing electrode RE2 may be smaller than the distance between the first driving electrode TE1 and the second sensing electrode RE2.

[0195] The second pressure sensing layer PSL2 may be in contact with the second driving electrode TE2 and the second sensing electrode RE2. That is, the second driving electrode TE2 and the second sensing electrode RE2 may be connected through the second pressure sensing layer PSL2.

[0196] like Fig.14As shown in , the second pressure sensing layer PSL2 may be disposed to cover the second driving electrode TE2 and the second sensing electrode RE2. More specifically, the second pressure sensing layer PSL2 may be disposed to cover the upper surface and the side surface of the second driving electrode TE2 and the second sensing electrode RE2. The second pressure sensing layer PSL2 may not overlap with the first pressure sensing layer PSL1.

[0197] The second pressure sensing layer PSL2 may be formed of the same material as that of the first pressure sensing layer PSL1. In this case, the second pressure sensing layer PSL2 may include a pressure-sensitive material and a polymer resin on which the pressure-sensitive material is disposed. The pressure-sensitive material may be metal particles of nickel, aluminum, titanium, tin, copper, and the like. For example, the second pressure sensing layer PSL2 may be QTC.

[0198] like Fig.13 and Fig.15 As shown in , the first pressure sensing unit CE1_1 may be represented as including a first resistor R1 and a second resistor R2 connected in parallel between the driving line TL and the first sensing line RL1. The first resistor R1 refers to a resistance generated due to the first pressure sensing layer PSL1 disposed between the first driving electrode TE1 and the first sensing electrode RE1, and the second resistor R2 refers to a resistance generated due to the second pressure sensing layer PSL2 disposed between the second driving electrode TE2 and the second sensing electrode RE2. Since the contact area of ​​the first pressure sensing layer PSL1 in contact with the first driving electrode TE1 and the first sensing electrode RE1 varies according to the pressure, the first resistor R1 corresponds to a variable resistor.

[0199] According to reference Figures 13 to 15 In the described embodiment, each of the first pressure sensing cell CE1_1 and the second pressure sensing cell CE2_1 may include a first resistor R1 having a variable resistance according to a pressure applied through the first pressure sensing layer PSL1, and a second resistor R2 defined by the second pressure sensing layer PSL2 in contact with the second driving electrode TE2 and the second sensing electrode RE2. That is, since each of the first pressure sensing cell CE1_1 and the second pressure sensing cell CE2_1 includes the second resistor R2 that is independent of the applied pressure, the resistance of each of the first pressure sensing cell CE1_1 and the second pressure sensing cell CE2_1 may be reduced.

[0200] Meanwhile, the second driving electrode TE2 and the second sensing electrode RE2 are electrodes connected to the second pressure sensing layer PSL2 to form the second resistor R2, and therefore the number of the second driving electrodes TE2 and the number of the second sensing electrodes RE2 do not need to be large. On the other hand, since the first driving electrode TE1 and the first sensing electrode RE1 are electrodes that sense pressure according to the area in contact with the first pressure sensing layer PSL1, it is preferred that a plurality of first driving electrodes TE1 and a plurality of first sensing electrodes RE1 are formed. The number of the second driving electrodes TE2 may be smaller than the number of the first driving electrodes TE1, and the number of the second sensing electrodes RE2 may be smaller than the number of the first sensing electrodes RE1.

[0201] In addition, as the thickness of the second driving electrode TE2 and the thickness of the second sensing electrode RE2 become larger, the resistance of the second resistor R2 can become smaller. In addition, as the width of the second driving electrode TE2 and the width of the second sensing electrode RE2 become larger, the resistance of the second resistor R2 can become smaller. In addition, as the number of second driving electrodes TE2 in contact with the second pressure sensing layer PSL2 and the number of second sensing electrodes RE2 increase, the contact area between the second pressure sensing layer PSL2 and the second driving electrode TE2 and the contact area between the second pressure sensing layer PSL2 and the second sensing electrode RE2 increase so that the resistance of the second resistor R2 can become smaller. In addition, as the area in which the second pressure sensing layer PSL2 contacts the second driving electrode TE2 and the second sensing electrode RE2 increases, the resistance of the second resistor R2 can become smaller. Therefore, the size of the second resistor R2 can be designed in consideration of the thickness of the second driving electrode TE, the thickness of the second sensing electrode RE2, the width of the second driving electrode TE, the width of the second sensing electrode RE2, the number of second driving electrodes TE2, the number of second sensing electrodes RE2, and the area in which the second pressure sensing layer PSL2 contacts the second driving electrode TE2 and the second sensing electrode RE2.

[0202] Fig.16 is a plan view showing a pressure sensor according to still another embodiment.

[0203] Reference Fig.16 According to the first pressure sensor of this embodiment and according to Fig.13 The first pressure sensor in the embodiment of is different in that the total area occupied by the first pressure sensor is reduced.

[0204] More specifically, in the first pressure sensor according to the present embodiment, the driving line TL_1, the first pressure sensing unit CE1_2 and the second pressure sensing unit CE2_1 may be connected to each other, the first pressure sensing unit CE1_2 may include a first sensing line RL1_1 and a second pressure sensing layer PSL2 in contact with the first driving electrode TE1 branched from the driving line TL_1, and the second pressure sensing unit CE2_1 may include a first sensing electrode RE1 branched from the sensing connection electrode RCE2 and a second pressure sensing layer PSL2 in contact with the second driving electrode TE2 branched from the first driving electrode TE1.

[0205] Each of the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_2 and the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_1 may be disposed to overlap the first pressure sensing layer PSL1 of the second pressure sensing unit CE2_1 in the first direction (X direction).

[0206] Fig.17 is a plan view showing a pressure sensor according to still another embodiment.

[0207] Reference Fig.17 According to the first pressure sensor of this embodiment, Fig.13 The first pressure sensor in the embodiment shown in FIG. 1 is different in that the first pressure sensor includes three pressure sensing units.

[0208] More specifically, the first pressure sensor according to the present embodiment may include a first pressure sensing unit CE1_1, a second pressure sensing unit CE2_1 located on the left side of the first pressure sensing unit CE1_1 in the second direction (Y direction), and a third pressure sensing unit CE3 located on the left side of the second pressure sensing unit CE2_1 in the second direction (Y direction). Like the first pressure sensing unit CE1_1, the third pressure sensing unit CE3 may include one first driving electrode TE1, one first sensing electrode RE1, and a first pressure sensing layer PSL1 and a second pressure sensing layer PSL2 overlapping the first driving electrode TE1 and the first sensing electrode RE1. The first pressure sensing layer PSL1 of the third pressure sensing unit CE3 may be disposed to overlap the first driving electrode TE1 connected to the driving line TL and the first sensing electrode RE1 connected to the third sensing line RL3.

[0209] Fig.18 is a plan view showing a pressure sensor according to still another embodiment.

[0210] Reference Fig.18 According to the first pressure sensor of this embodiment and according to Fig.17The first pressure sensor in the embodiment of FIG. 1 is different in that the second pressure sensing unit CE2_2 does not include the first pressure sensing layer PSL1 .

[0211] More specifically, the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_2 according to the present embodiment may be disposed between the first pressure sensing layer PSL1 of the first pressure sensing unit CE1_1 and the first pressure sensing layer PSL1 of the third pressure sensing unit CE3 to overlap with the first pressure sensing layer PSL1 in the second direction (Y direction).

[0212] Fig.19 is a plan view showing a pressure sensor according to still another embodiment.

[0213] Reference Fig.19 According to the first pressure sensor of this embodiment and according to Fig.17 The first pressure sensor in the embodiment is different in that the pressure sensing unit includes a first pressure sensing layer PSL1 and a second pressure sensing layer PSL2 arranged in the second direction (Y direction), and the second pressure sensing unit CE2_3 does not include the first pressure sensing layer PSL1.

[0214] More specifically, in the first pressure sensor according to the present embodiment, the pressure sensing unit may include a first pressure sensing layer PSL1 and a second pressure sensing layer PSL2 arranged in the second direction (Y direction), and the second pressure sensing unit CE2_3 may not include the first pressure sensing layer PSL1.

[0215] Fig. 20 is a plan view showing a pressure sensor according to still another embodiment.

[0216] Reference Fig. 20 According to the first pressure sensor of this embodiment and according to Fig.19 The first pressure sensor in the embodiment of FIG. 1 is different in that the second pressure sensing unit CE2_4 does not include a region where the first pressure sensing layer PSL1 is not provided.

[0217] More specifically, in the first pressure sensor according to the present embodiment, the second pressure sensing unit CE2_4 may not include an area where the first pressure sensing layer PSL1 is not provided. That is, the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_4 may be inserted between the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_3 and the first pressure sensing layer PSL1 of the third pressure sensing unit CE3_1.

[0218] That is, the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_3 may be disposed between the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_4 and the first pressure sensing layer PSL1 of the first pressure sensing unit CE1_3.

[0219] Fig.21 is a plan view showing a pressure sensor according to still another embodiment.

[0220] Reference Fig.21 In the first pressure sensor according to the present embodiment, the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_4 may be inserted between the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_3 and the second pressure sensing layer PSL2 of the third pressure sensing unit CE3_2.

[0221] That is, the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_3 can be set between the first pressure sensing layer PSL1 of the first pressure sensing unit CE1_3 and the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_4, and the second pressure sensing layer PSL2 of the third pressure sensing unit CE3_2 can be set between the first pressure sensing layer PSL1 of the third pressure sensing unit CE3_2 and the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_4.

[0222] Fig. 22 is a plan view showing a pressure sensor according to still another embodiment.

[0223] Reference Fig. 22 According to the first pressure sensor of this embodiment and according to Fig.19 The first pressure sensor in the embodiment of the present invention is different in that it can be obtained according to Fig.19 That is, the first pressure sensing unit CE1_4 according to this embodiment is omitted. Fig.19 The second pressure sensing unit CE2_3 is substantially the same as the second pressure sensing unit CE2_5. Fig.19 The third pressure sensing unit CE3_1 is substantially the same.

[0224] Fig.23 is a plan view showing a pressure sensor according to still another embodiment.

[0225] Reference Fig.23 According to the first pressure sensor of this embodiment and according to Fig. 22 The first pressure sensor in the embodiment of FIG. 1 is different in that a region of the first pressure sensing layer PSL1 where the first pressure sensing unit CE1_4 is not provided may be omitted.

[0226] Fig.24 is a plan view showing a pressure sensor according to still another embodiment.

[0227] Reference Fig.24 According to the first pressure sensor of this embodiment and according to Fig.23 The first pressure sensor in the embodiment of FIG. 1 is different in that the second pressure sensing layer PSL2 of the second pressure sensing unit CE2_6 is disposed between the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_5 and the first pressure sensing layer PSL1 of the second pressure sensing unit CE2_6 .

[0228] Fig.25 is a plan view showing a pressure sensor according to still another embodiment.

[0229] Reference Fig.25 In the first pressure sensor according to this embodiment, only one pressure sensing unit, for example, the first pressure sensing unit CE1_6 is shown, and Fig.13 The embodiment of the present invention is different in that the first pressure sensing layer PSL1 of the first pressure sensing unit CE1_6 has a recessed pattern IDP, and the second pressure sensing layer PSL2 of the first pressure sensing unit CE1_6 is disposed in the region of the recessed pattern IDP of the first pressure sensing layer PSL1. Fig.25 The embodiment shows that the cell area can be reduced.

[0230] More specifically, the first pressure sensing layer PSL1 of the first pressure sensing cell CE1_6 has the depression pattern IDP, and the second pressure sensing layer PSL2 of the first pressure sensing cell CE1_6 may be disposed in a region of the depression pattern IDP of the first pressure sensing layer PSL1.

[0231] In addition, the sensing connection electrode RCE may include a first sensing connection electrode RCE1 extending along the second direction (Y direction) and a second sensing connection electrode RCE2 bent from the first sensing connection electrode RCE1 in the first direction (X direction). In addition, the driving connection electrode TCE may include a first driving connection electrode TCE1 extending along the first direction (X direction) and a second driving connection electrode TCE2 bent from the first driving connection electrode TCE1 in the second direction (Y direction).

[0232] The first driving electrode TE1 and the first sensing electrode RE1 may be branched from the driving connection electrodes TCE1 and TCE2 and the sensing connection electrodes RCE1 and RCE2, respectively. Fig.25As shown in , each of the first driving electrode TE1 and the first sensing electrode RE1 may extend in one direction between the first direction (X direction) and the second direction (Y direction), and the extension directions of each of the first driving electrode TE1 and the first sensing electrode RE1 may be parallel to each other without crossing each other.

[0233] Fig.26 is a plan view showing a pressure sensor according to still another embodiment.

[0234] Reference Fig.26 According to the first pressure sensor of this embodiment and according to Fig.25 The first pressure sensor in the embodiment of FIG. 1 is different in that the extending directions of the first driving electrode TE1 and the first sensing electrode RE1 cross each other.

[0235] More specifically, the first extension line TEL extending along the extension direction of the first driving electrode TE1 and the second extension line REL extending along the extension direction of the first sensing electrode RE1 may cross each other at a point CP extending to each other.

[0236] Fig. 27 is a plan view showing a pressure sensor according to still another embodiment.

[0237] Reference Fig. 27 According to the first pressure sensor of this embodiment and according to Fig.25 The first pressure sensor in the embodiment of FIG. 1 is different in that each of the first driving electrode TE1 and the first sensing electrode RE1 includes a bent portion.

[0238] More specifically, according to the present embodiment, the first driving electrode TE1 may include a first sub-driving electrode TE11 branched from the driving connection electrode TCE and extending in the first direction (X direction), and a second sub-driving electrode TE12 extending from the first sub-driving electrode TE11 in the second direction (Y direction), and the first sensing electrode RE1 may include a first sub-sensing electrode RE11 branched from the sensing connection electrode RCE and extending in the second direction (Y direction), and a second sub-sensing electrode RE12 extending from the first sub-sensing electrode RE11 along the first direction (X direction).

[0239] The first driving electrode TE1 may be disposed in parallel with the first sensing electrode RE1. That is, the first sub driving electrode TE11 of the first driving electrode TE1 and the second sub sensing electrode RE12 of the first sensing electrode RE1 may be disposed in parallel with each other, and the second sub driving electrode TE12 of the first driving electrode TE1 and the first sub sensing electrode RE11 of the first sensing electrode RE1 may be disposed in parallel with each other.

[0240] Although the embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A display device, wherein: The display device comprises: The display panel comprises a first side surface and a first lower surface, wherein the first lower surface is connected to the first side surface and is a surface opposite to the display surface; a pressure sensor, disposed on the first lower surface of the display panel; and a lower support, comprising an upper surface facing the first lower surface of the display panel and a second side surface facing the first side surface of the display panel, Wherein, the pressure sensor is arranged between the first lower surface of the display panel and the upper surface of the lower bracket, and is arranged on the second side surface of the lower bracket, The pressure sensor includes: a first substrate facing the second side surface of the lower support in a first direction; a first pressure sensing layer disposed between the first substrate and the second side surface of the lower support; and a first driving electrode and a first sensing electrode disposed between the first pressure sensing layer and the second side surface of the lower support, and the first sensing electrode is spaced apart from the first driving electrode, and The first sensing electrode and the first driving electrode occupy a common horizontal plane, which is parallel to the bottom surface of the first substrate in the cross-sectional view, and there is a gap in the first direction between a horizontal plane of the first pressure sensing layer which is parallel to the bottom surface of the first substrate in the cross-sectional view and the common horizontal plane of the first driving electrode and the first sensing electrode.

2. The display device according to claim 1, wherein: The second side surface of the lower bracket includes: a first sub-side surface; a second sub-side surface; and a third sub-side surface, which is recessed deeper than the first sub-side surface and the second sub-side surface between the first sub-side surface and the second sub-side surface, and the width of the sub-side portion of the lower bracket corresponding to the third sub-side surface in the first direction is smaller than the width of the sub-side portion of the lower bracket corresponding to the first sub-side surface or the second sub-side surface in the first direction, and The pressure sensor is disposed to overlap with the third sub-side surface and to be embedded in a side surface portion formed by the first sub-side surface to the third sub-side surface.

3. The display device according to claim 1, wherein: The pressure sensor further includes a second substrate facing the first substrate and disposed between the second side surface of the lower support and the first driving electrode and the first sensing electrode, wherein the second substrate is attached to the lower support.

4. The display device according to claim 3, wherein: The strength of the first substrate is greater than the strength of the second substrate, and The first substrate also includes a rigidity reinforcing material.

5. The display device according to claim 1, wherein: The first driving electrode and the first sensing electrode are directly disposed on the second side surface of the lower support.

6. The display device according to claim 1, wherein: The pressure sensor further includes: a second driving electrode disposed between the second side surface of the lower support and the first pressure sensing layer; a second sensing electrode spaced apart from the second driving electrode; and a second pressure sensing layer contacting the second driving electrode and the second sensing electrode.

7. The display device according to claim 1, wherein: The pressure sensor includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, wherein the first pressure sensing layer comprises a pattern recessed in one direction, and The second pressure sensing layer is disposed in the recessed area of ​​the first pressure sensing layer.

8. The display device according to claim 7, wherein: Each of the first driving electrode and the first sensing electrode extends in one direction, and The extension directions of the first driving electrode and the first sensing electrode are parallel to each other and do not cross each other.

9. The display device according to claim 7, wherein: The first driving electrodes and the first sensing electrodes extend in directions crossing each other.

10. The display device according to claim 7, wherein: The first driving electrode includes: a first portion extending in a first direction; and a second portion extending from the first portion in a second direction intersecting the first direction. The first sensing electrode includes: a third portion extending in the first direction; and a fourth portion extending from the third portion in the second direction. The first portion overlaps the third portion, and The second portion overlaps with the fourth portion.

11. The display device according to claim 1, wherein: The pressure sensor comprises: a first pressure unit and a second pressure unit, The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; and a third pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes, and In a plan view, the second pressure sensing layer and the third pressure sensing layer are disposed to overlap another portion of the plurality of first pressure sensing layers along the same direction.

12. The display device according to claim 1, wherein: The pressure sensor includes a first pressure unit and a second pressure unit. The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; and a third pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes, and The first pressure sensing layer is disposed between the second pressure sensing layer and the third pressure sensing layer.

13. The display device according to claim 1, wherein: The pressure sensor includes a first pressure unit and a second pressure unit. The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; and a third pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes, and The second pressure sensing layer is disposed between the first pressure sensing layer and the third pressure sensing layer.

14. The display device according to claim 1, wherein: The pressure sensor includes: a first pressure unit; a second pressure unit; and a third pressure unit disposed between the first pressure unit and the second pressure unit. The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; a third pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes; and a fourth pressure sensing layer contacting another portion of the plurality of first driving electrodes and another portion of the plurality of second sensing electrodes and spaced apart from the third pressure sensing layer. The third pressure unit includes: a plurality of first driving electrodes; a plurality of third sensing electrodes; and a fifth pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of third sensing electrodes, and The fifth pressure sensing layer is disposed between the first pressure sensing layer and the third pressure sensing layer.

15. The display device according to claim 1, wherein: The pressure sensor includes: a first pressure unit; a second pressure unit; and a third pressure unit disposed between the first pressure unit and the second pressure unit. The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; a third pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes; and a fourth pressure sensing layer contacting another portion of the plurality of first driving electrodes and another portion of the plurality of second sensing electrodes and spaced apart from the third pressure sensing layer. The third pressure unit includes: a plurality of first driving electrodes; a plurality of third sensing electrodes; and a fifth pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of third sensing electrodes, and The fifth pressure sensing layer is disposed between the first pressure sensing layer and the fourth pressure sensing layer.

16. The display device according to claim 1, wherein: The pressure sensor includes: a first pressure unit; a second pressure unit; and a third pressure unit disposed between the first pressure unit and the second pressure unit. The first pressure unit includes: a plurality of first driving electrodes; a plurality of first sensing electrodes; a first pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of first sensing electrodes; and a second pressure sensing layer contacting with another portion of the plurality of first driving electrodes and another portion of the plurality of first sensing electrodes and spaced apart from the first pressure sensing layer, The second pressure unit includes: a plurality of first driving electrodes; a plurality of second sensing electrodes; a third pressure sensing layer arranged to overlap with a portion of the plurality of first driving electrodes and a portion of the plurality of second sensing electrodes; and a fourth pressure sensing layer contacting another portion of the plurality of first driving electrodes and another portion of the plurality of second sensing electrodes and spaced apart from the third pressure sensing layer. The third pressure unit includes: a plurality of first driving electrodes; a plurality of third sensing electrodes; and a fifth pressure sensing layer in contact with a portion of the plurality of first driving electrodes and a portion of the plurality of third sensing electrodes, and The fifth pressure sensing layer is disposed between the second pressure sensing layer and the fourth pressure sensing layer.

17. A display device, wherein: The display device comprises: The display panel comprises a first side surface and a first lower surface, wherein the first lower surface is connected to the first side surface and is a surface opposite to the display surface; a pressure sensor, disposed on the first lower surface of the display panel; and a lower support, comprising an upper surface facing the first lower surface of the display panel and a second side surface facing the first side surface of the display panel, Wherein, the pressure sensor is arranged between the first lower surface of the display panel and the upper surface of the lower bracket, and is arranged on the second side surface of the lower bracket, The second side surface of the lower bracket includes: a first sub-side surface; a second sub-side surface; and a third sub-side surface, which is recessed deeper than the first sub-side surface and the second sub-side surface between the first sub-side surface and the second sub-side surface, and the width of the sub-side portion of the lower bracket corresponding to the third sub-side surface in the first direction is smaller than the width of the sub-side portion of the lower bracket corresponding to the first sub-side surface or the second sub-side surface in the first direction, and The pressure sensor is disposed to overlap with the third sub-side surface and to be embedded in a side surface portion formed by the first sub-side surface to the third sub-side surface.

18. The display device according to claim 17, wherein: The pressure sensor includes: a first substrate facing the second side surface of the lower support in the first direction; a first pressure sensing layer disposed between the first substrate and the second side surface of the lower support; and a first driving electrode and a first sensing electrode disposed between the first pressure sensing layer and the second side surface of the lower support, and the first sensing electrode is spaced apart from the first driving electrode, and The first sensing electrode and the first driving electrode occupy a common horizontal plane, which is parallel to the bottom surface of the first substrate in the cross-sectional view, and there is a gap in the first direction between a horizontal plane of the first pressure sensing layer which is parallel to the bottom surface of the first substrate in the cross-sectional view and the common horizontal plane of the first driving electrode and the first sensing electrode.

19. The display device according to claim 18, wherein: The pressure sensor further includes a second substrate facing the first substrate and disposed between the second side surface of the lower support and the first driving electrode and the first sensing electrode, wherein the second substrate is attached to the lower support.

20. The display device according to claim 18, wherein: The first driving electrode and the first sensing electrode are directly disposed on the second side surface of the lower support.

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