Display device and mobile electronic device including the same

Abstract

The present application relates to a display device and a mobile electronic device including the display device. The display device includes a display panel, and the display panel includes a display area and a non-display area. The display panel includes: a substrate; a display layer, which is arranged on the substrate; an encapsulation layer, which is arranged on the display layer; a sensor electrode layer, which is arranged on the encapsulation layer; and a polarization layer, which is arranged on the sensor electrode layer. The polarization layer includes a polarization part corresponding to the display area and an antenna electrode corresponding to the non-display area.

Description

Technical Field

[0001] The present disclosure relates to a display, and more particularly, to a display device and a mobile electronic device including the display device. Background Art

[0002] Today, there are various types of display devices having different form factors. Display devices are commonly used in various electronic devices such as smart phones, digital cameras, laptop computers, navigation systems, and smart TVs.

[0003] A display device designed to be included in a mobile electronic device may include an antenna for transmitting and receiving electromagnetic waves. For example, the display device may include an antenna for transmitting and receiving fourth generation (4G) mobile communications such as long term evolution (LTE) and fifth generation (5G) mobile communications. Various frequency bands of electromagnetic waves may depend on the communication technology, and the shape and length of the antenna may be changed according to the frequency band of the electromagnetic waves transmitted and received. Summary of the invention

[0004] The display device includes a display panel, and the display panel includes a display area and a non-display area. The display panel includes: a substrate; a display layer disposed on the substrate; an encapsulation layer disposed on the display layer; a sensor electrode layer disposed on the encapsulation layer; and a polarization layer disposed on the sensor electrode layer. The polarization layer includes a polarization portion corresponding to the display area and an antenna electrode corresponding to the non-display area.

[0005] The polarizing layer may include: a pressure-sensitive adhesive (PSA) layer; a polyvinyl alcohol (PVA) layer disposed on the PSA layer; a metal layer disposed on the PVA layer, the metal layer including an antenna electrode; and a triacetyl cellulose (TAC) layer or a polyethylene terephthalate (PET) layer disposed on the metal layer.

[0006] The antenna electrode may include: a first antenna electrode disposed in a first non-display area located at a first side of the display area; and a second antenna electrode disposed in a second non-display area located at a second side of the display area. The first side and the second side of the display area may be adjacent to each other.

[0007] An elongated axis of the PVA layer may be arranged in a first direction parallel to a short side of the display panel, and each of the first antenna electrode and the second antenna electrode may have a metal mesh shape.

[0008] An elongated axis of the PVA layer may be arranged in a second direction parallel to a long side of the display panel, and each of the first antenna electrode and the second antenna electrode may have a metal mesh shape.

[0009] The extension axis of the PVA layer can be arranged in a diagonal direction having a specified angle relative to the short side of the display panel, the antenna electrode may include a first antenna electrode and a second antenna electrode arranged in different directions, and each of the first antenna electrode and the second antenna electrode may have a metal mesh shape.

[0010] The metal layer may further include a blackening coating covering the surface of the antenna electrode.

[0011] The blackened coating may include a plating film including copper.

[0012] The blackened coating may include a silver halide salt.

[0013] The blackened coating may include a coating film including aluminum.

[0014] The metal layer may further include an insulating film covering the blackened coating.

[0015] The polarization layer may include a PSA layer, a PVA layer disposed on the PSA layer, a TAC layer disposed on the PVA layer, and a metal layer disposed on the TAC layer, the metal layer including the antenna electrode.

[0016] The polarizing layer may include a PSA layer, a PVA layer disposed on the PSA layer, a PET layer disposed on the PVA layer, and a metal layer disposed on the PET layer, the metal layer including the antenna electrode.

[0017] The polarization layer may further include an antenna wiring and an antenna pad electrically connected to the antenna electrode, and the antenna pad may be connected to the antenna FPCB.

[0018] The polarization layer may further include a through hole connecting the antenna electrode with the sensor electrode layer. The sensor electrode layer may include an antenna wiring and an antenna pad electrically connected to the through hole. The antenna pad may be connected to the touch FPCB.

[0019] The mobile electronic device includes a display panel, and the display panel includes a display area and a non-display area. The display panel includes: a substrate; a display layer disposed on the substrate; an encapsulation layer disposed on the display layer; a sensor electrode layer disposed on the encapsulation layer; and a polarization layer disposed on the sensor electrode layer. The polarization layer includes a polarization portion corresponding to the display area and an antenna electrode corresponding to the non-display area.

[0020] The polarizing layer may include: a pressure-sensitive adhesive (PSA) layer; a polyvinyl alcohol (PVA) layer disposed on the PSA layer; a metal layer disposed on the PVA layer, the metal layer including an antenna electrode; and a triacetyl cellulose (TAC) layer or a polyethylene terephthalate (PET) layer disposed on the metal layer.

[0021] The antenna electrode may include: a first antenna electrode disposed in a first non-display area at a first side of the display area; and a second antenna electrode disposed in a second non-display area at a second side of the display area. The first side and the second side of the display area may be adjacent to each other.

[0022] An elongated axis of the PVA layer may be arranged in a first direction parallel to a short side of the display panel, and each of the first antenna electrode and the second antenna electrode may have a metal mesh shape.

[0023] An elongated axis of the PVA layer may be arranged in a second direction parallel to a long side of the display panel, and each of the first antenna electrode and the second antenna electrode may have a metal mesh shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other aspects and features of the present disclosure will become more apparent by describing in detail exemplary embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0025] Figure 1 and Figure 2 is a plan view showing a display device according to an embodiment of the present disclosure;

[0026] Figure 3 and Figure 4 is a cross-sectional view showing a display device according to an embodiment of the present disclosure;

[0027] Figure 5 and Figure 6 is a plan view showing a display device according to an embodiment of the present disclosure;

[0028] Figure 7 is a plan view showing a polarizing layer according to an embodiment of the present disclosure;

[0029] Figure 8 is a plan view showing the shape of an antenna electrode when an extension axis of a PVA layer disposed in a polarizing layer is in a first direction according to an embodiment of the present disclosure;

[0030] Fig. 9 is a plan view showing the shape of an antenna electrode when an extended axis of a PVA layer provided in a polarizing layer is in a diagonal direction according to an embodiment of the present disclosure;

[0031] Fig.10 is a plan view showing the shape of an antenna electrode when an extension axis of a PVA layer disposed in a polarizing layer is in a second direction according to an embodiment of the present disclosure;

[0032] Fig.11 is a schematic cross-sectional view showing a stacking structure of a display panel according to an embodiment of the present disclosure;

[0033] Fig.12 is a schematic cross-sectional view showing a stacking structure of a display panel according to an embodiment of the present disclosure;

[0034] Fig.13 is a schematic cross-sectional view showing a stacked structure of a polarizing layer including a blackened coating according to an embodiment of the present disclosure;

[0035] Fig.14 is a schematic cross-sectional view showing a stacked structure of a polarizing layer further including an insulating film according to an embodiment of the present disclosure;

[0036] Fig.15 is a schematic cross-sectional view showing a stacked structure of a polarizing layer including a blackened coating according to an embodiment of the present disclosure;

[0037] Fig.16 is a schematic cross-sectional view showing a stacked structure of a polarizing layer further including an insulating film according to an embodiment of the present disclosure;

[0038] Fig.17 is a schematic cross-sectional view of a display device showing connection between an antenna electrode and an antenna circuit board for describing a polarization layer; and

[0039] Fig.18 is a schematic cross-sectional view showing a display device for describing connection between an antenna electrode and an antenna circuit board of a polarization layer. DETAILED DESCRIPTION

[0040] Embodiments of the present invention will now be described more fully below with reference to the accompanying drawings. However, the present invention may be implemented in different forms and should not necessarily be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0041] It will also be understood that when a layer is referred to as being 'on' another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. Throughout the specification and drawings, the same reference numerals may refer to the same components.

[0042] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not necessarily be limited by these terms. These terms are used to distinguish one element from another element. For example, without departing from the teachings of the present invention, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0043] The features of each of the various embodiments of the present disclosure may be combined with each other in part or in whole, and may interact with each other technically differently, and the respective embodiments may be implemented independently of each other, or may be implemented together in association with each other.

[0044] Hereinafter, specific embodiments will be described with reference to the accompanying drawings.

[0045] Figure 1 and Figure 2 is a plan view showing a display device 10 according to an embodiment of the present disclosure.

[0046] refer to Figure 1 and Figure 2 According to an embodiment of the present disclosure, the display device 10 can be applied to mobile electronic devices such as mobile phones, smart phones, tablet computers, mobile communication terminals, electronic dictionaries, electronic books, portable multimedia players (PMPs), navigation systems, and ultra-mobile PCs (UMPCs). In addition, according to an embodiment of the present disclosure, the display device 10 can be applied to a display unit of a television, a laptop computer, a computer display, a digital billboard, or an Internet of Things (IoT) device. In addition, according to an embodiment of the present disclosure, the display device 10 can be applied to wearable devices such as smart watches, watch phones, glasses-type displays, and head-mounted displays (HMDs). In addition, according to an embodiment of the present disclosure, the display device 10 can be applied to a central information display (CID) set in a dashboard of a vehicle, an interior mirror display that replaces a side mirror of a vehicle, or a display set on the rear surface of a front seat of a vehicle for rear seat entertainment.

[0047] In the present disclosure, a first direction (e.g., an X-axis direction) is a long side direction of the display device 10, and may be, for example, a vertical direction of the display device 10. A second direction (e.g., a Y-axis direction) is a short side direction of the display device 10, and may be, for example, a horizontal direction of the display device 10. A third direction (e.g., a Z-axis direction) may be a thickness direction of the display device 10. A corner where a long side in the first direction (e.g., an X-axis direction) and a short side in the second direction (e.g., an Y-axis direction) intersect may be rounded to have a predetermined curvature, or may be formed at a right angle.

[0048] According to an embodiment of the present disclosure, the display device 10 includes a display panel 300, a display circuit board 310, a display driving circuit 320, a touch driving circuit 330, and an antenna circuit board 340. A connector 341 may be formed on one side of the antenna circuit board 340.

[0049] 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 diode (OLED) display panel using an organic light-emitting diode (OLED) including an organic light-emitting layer, a micro light-emitting diode display panel using a micro light-emitting diode (LED), a quantum dot light-emitting display panel using a quantum dot light-emitting diode including a quantum dot light-emitting layer, or an inorganic light-emitting display panel using an inorganic light-emitting element including an inorganic semiconductor.

[0050] The display panel 300 may be a flexible display panel that is flexible and can therefore be easily bent, folded, or rolled to a significant degree without cracking or otherwise suffering damage. For example, the display panel 300 may be a foldable display panel that can be folded or unfolded, a curved display panel whose display surface is curved, a curved display panel in which an area other than the display surface is curved, a rollable display panel that can be rolled or unrolled, or a stretchable display panel that can be stretched.

[0051] The display panel 300 may include a main area MA, a sub area SBA protruding from one side of the main area MA, and a protrusion area PA protruding from the other side of the main area MA.

[0052] The main area MA may include a display area DA for displaying an image and a non-display area NDA which is a peripheral area of ​​the display area DA. The display area DA may occupy most of the main area MA. The display area DA may be disposed at the center of the main area MA. The non-display area NDA may be an outer area of ​​the display area DA. The non-display area NDA may be defined as an edge area of ​​the display panel 300. The non-display area NDA may be referred to as a dead space area.

[0053] The sub-region SBA may protrude from one side of the main region MA in the first direction (eg, the X-axis direction). For example, the one side of the main region MA may be the lower side of the main region MA. Figure 1 As shown in , the length of the sub-region SBA in the first direction (e.g., the X-axis direction) may be shorter than the length of the main region MA in the first direction (e.g., the X-axis direction), and the length of the sub-region SBA in the second direction (e.g., the Y-axis direction) may be shorter than the length of the main region MA in the second direction (e.g., the Y-axis direction), but the embodiments of the present disclosure are not necessarily limited to this.

[0054] refer to Figure 2 , the sub-region SBA may be curved, and at least a portion of the curved sub-region SBA may be disposed below the main region MA of the display panel 300. In this case, at least a portion of the sub-region SBA may overlap the main region MA of the display panel 300 in a third direction (e.g., the Z-axis direction).

[0055] The display pad DPD may be disposed at one edge of the sub-region SBA. One edge of the sub-region SBA may be the lower edge of the sub-region SBA. The display circuit board 310 may be attached to the display pad DPD of the sub-region SBA. The display circuit board 310 may be attached to the display pad DPD of the sub-region SBA by using a conductive adhesive such as an anisotropic conductive film and an anisotropic conductive paste. The display circuit board 310 may be a flexible printed circuit board (FPCB) that can be bent, a rigid printed circuit board (PCB) that is rigid and not easily bent, or a composite printed circuit board including both a rigid printed circuit board and a flexible printed circuit board.

[0056] The display driving circuit 320 may be disposed on the sub-area SBA of the display panel 300. The display driving circuit 320 may receive a control signal and a power voltage and generate and output a signal and a voltage for driving the display panel 300. The display driving circuit 320 may be formed of an integrated circuit (IC).

[0057] The touch driving circuit 330 may be provided on the display circuit board 310 . The touch driving circuit 330 may be formed of an integrated circuit. The touch driving circuit 330 may be attached to the display circuit board 310 .

[0058] The touch driving circuit 330 may be electrically connected to the sensor electrodes of the sensor electrode layer of the display panel 300 through the display circuit board 310. The touch driving circuit 330 may output a touch driving signal to each of the sensor electrodes and detect a voltage change according to mutual capacitance of the sensor electrodes.

[0059] The sensor electrode layer of the display panel 300 may sense proximity touch and / or contact touch. Contact touch may be direct contact of an object such as a human finger or a pen / stylus to the cover window of the display panel 300. Proximity touch may be a situation where an object such as a human finger or a pen / stylus is positioned above the cover window and is spaced a small distance from the cover window, for example, may be hovering.

[0060] A power supply unit for supplying a driving voltage for driving the display pixels of the display panel 300 and the display driving circuit 320 may be additionally provided on the display circuit board 310. Alternatively, the power supply unit may be integrated with the display driving circuit 320, and in this case, the display driving circuit 320 and the power supply unit may be formed as one integrated circuit.

[0061] The protruding area PA may be an area including at least one element of a power supply line, a ground line, and an antenna electrode of an antenna module for wireless communication. The protruding area PA may protrude from the other side of the main area MA in a first direction (e.g., an X-axis direction). For example, the other side of the main area MA may be an upper side of the main area MA. Figure 1 As shown in the figure, the length of the protruding area PA in the first direction (e.g., the X-axis direction) may be shorter than the length of the main area MA in the first direction (e.g., the X-axis direction), and the length of the protruding area PA in the second direction (e.g., the Y-axis direction) may be shorter than the length of the main area MA in the second direction (e.g., the Y-axis direction), but the embodiments of the present disclosure are not necessarily limited to this.

[0062] like Figure 2 As shown in , at least a portion of the protruding area PA may be bent, and at least a portion of the bent protruding area PA may be disposed below the main area MA of the display panel 300. In this case, at least a portion of the protruding area PA may overlap the main area MA of the display panel 300 in a third direction (e.g., the Z-axis direction).

[0063] The antenna pad APD may be disposed at one edge of the protruding area PA. The antenna circuit board 340 may be attached to the antenna pad APD of the protruding area PA. The antenna circuit board 340 may be attached to the antenna pad APD of the protruding area PA by using a conductive adhesive such as an anisotropic conductive film and an anisotropic conductive adhesive. One side of the antenna circuit board 340 may include a connector 341 connected to the antenna driving circuit ( Figure 4 350) of the main circuit board 400 (see Figure 4 ). The antenna circuit board 340 may be a flexible printed circuit board (FPCB).

[0064] Figure 3 and Figure 4 is a cross-sectional view showing a display device 10 according to an embodiment of the present disclosure.

[0065] refer to Figure 3 and Figure 4 According to an embodiment of the present disclosure, the display device 10 may include a display panel 300. The display panel 300 may include a substrate SUB, a display layer DISL, an encapsulation layer ENC, a sensor electrode layer SENL, a polarization layer PF, a cover window CW, and a panel cover PB.

[0066] The substrate SUB may be made of an insulating material such as a polymer resin. The substrate SUB may be a flexible substrate that can be bent, folded, rolled, and the like.

[0067] In the main area MA, the display layer DISL may be disposed on the substrate SUB. The display layer DISL may be a layer including a light emitting region to display an image. The display layer DISL may include a thin film transistor layer on which a thin film transistor is formed and a light emitting element layer in which a light emitting element for emitting light is disposed in the light emitting region.

[0068] Scan lines, data lines, power lines, etc. for driving the light-emitting elements in the light-emitting area may be arranged in the display area DA of the display layer DISL. A scan driver for outputting scan signals to the scan lines and a fan-out line connecting the data lines to the display driving circuit 320 may be arranged in the non-display area NDA of the display layer DISL.

[0069] The encapsulation layer ENC may be disposed on the display layer DISL. The encapsulation layer ENC may be a layer for encapsulating the light emitting element layer of the display layer DISL to prevent oxygen or moisture from penetrating into the light emitting element layer of the display layer DISL. The encapsulation layer ENC may be disposed on the upper surface and side surfaces of the display layer DISL.

[0070] The sensor electrode layer SENL may be disposed on the encapsulation layer ENC. The sensor electrode layer SENL may include sensor electrodes. The sensor electrode layer SENL may sense a touch by using the sensor electrodes.

[0071] The polarization layer PF may be disposed on the sensor electrode layer SENL. The polarization layer PF may include a first substrate, a linear polarization plate, a phase delay film such as a λ / 4 plate (quarter wave plate), and a second substrate. The first substrate, the phase delay film, the linear polarization plate, and the second substrate may be sequentially stacked on the sensor electrode layer SENL.

[0072] The cover window CW may be disposed on the polarization layer (eg, polarization film) PF. The cover window CW may be attached to the polarization layer PF by a transparent adhesive such as an optically clear adhesive (OCA).

[0073] The panel cover PB may be disposed under the substrate SUB of the display panel 300. The panel cover PB may be attached to the lower surface of the substrate SUB of the display panel 300 by an adhesive. The adhesive may be a pressure sensitive adhesive (PSA). The panel cover PB may include a light blocking member for absorbing ambient light, a buffer member for absorbing external impact, and / or a heat sink for effectively releasing heat of the display panel 300.

[0074] A light blocking member may be disposed under the substrate SUB of the display panel 300. The light blocking member prevents transmission of light to prevent components disposed under the light blocking member (e.g., the display circuit board 310, etc.) from being observed from an upper portion of the display panel 300. The light blocking member may include a light absorbing material such as a black pigment or a black dye.

[0075] The buffer may be disposed below the light blocking member. The buffer absorbs external impact to prevent the display panel 300 from being damaged. The buffer may include a single layer or multiple layers. For example, the buffer may include a polymer resin such as polyurethane, polycarbonate, polypropylene, and polyethylene, or may include a material having elasticity, such as a sponge formed by foaming rubber, a urethane-based material, or an acrylic-based material.

[0076] The heat sink may be disposed under the buffer. The heat sink may include a first heat sink layer including graphite or carbon nanotubes and a second heat sink layer formed of a metal thin film such as copper, nickel, ferrite, or silver that may shield electromagnetic waves and may have excellent thermal conductivity.

[0077] According to the embodiments of the present disclosure, Figure 4 As shown in FIG. 1 , the substrate SUB may be bent in the sub-area SBA and may be disposed under the panel cover PB of the display panel 300. The sub-area SBA of the substrate SUB may be attached to the lower surface of the panel cover PB by a first adhesive 391. The first adhesive 391 may be a pressure sensitive adhesive.

[0078] According to the embodiments of the present disclosure, Figure 4 As shown in FIG. 3 , the protruding area PA of the substrate SUB may be bent and may be disposed under the panel cover PB of the display panel 300. The protruding area PA of the substrate SUB may be attached to the lower surface of the panel cover PB by a second adhesive 392. The second adhesive 392 may be a pressure sensitive adhesive.

[0079] The display circuit board 310 may be attached to the display pad DPD of the sub-area SBA of the substrate SUB by using a conductive adhesive such as an anisotropic conductive film and an anisotropic conductive adhesive. The display circuit board 310 may include a connector 311 connected to a flexible circuit board 312. The display circuit board 310 may be connected to a connector 352 of the main circuit board 400 through the flexible circuit board 312.

[0080] The touch driving circuit 330 may be disposed on the display circuit board 310. The touch driving circuit 330 may be configured to generate a touch signal according to the sensor electrodes (or Fig.11 Touch data is generated by the change of the electrical signal sensed in each of the touch sensors in the touch sensor, and the touch data is transmitted to the main processor 410 on the main circuit board 400, and the main processor 410 can calculate the touch coordinates where the touch occurs by analyzing the touch data.

[0081] The antenna circuit board 340 may be attached to the antenna pad APD of the protruding area PA of the substrate SUB by using a conductive adhesive such as an anisotropic conductive film and an anisotropic conductive adhesive. The connector 341 of the antenna circuit board 340 may be connected to the main circuit board 400. The protruding area PA may be connected to the main circuit board 400 through the antenna circuit board 340.

[0082] The main circuit board 400 may be a rigid printed circuit board (PCB) that is rigid and does not bend easily. The main processor 410 and the antenna driving circuit 350 may be disposed on the main circuit board 400 .

[0083] The antenna driving circuit 350 may be electrically connected to the antenna electrode (eg, Figure 7 Therefore, the antenna driving circuit 350 can drive the antenna through the antenna electrodes (for example, Figure 7 AE1 and AE2) receive electromagnetic wave signals and output the electromagnetic wave signals to be transmitted to the antenna electrodes (e.g., Figure 7 The antenna circuit board 340 may include an integrated circuit (IC).

[0084] The antenna driving circuit 350 can process the antenna electrodes (e.g., Figure 7 For example, the antenna driving circuit 350 can change the electromagnetic wave signal transmitted and received by the antenna electrodes (e.g., Figure 7 The antenna driving circuit 350 can change not only the amplitude of the electromagnetic wave signals received by the antenna electrodes, but also the phase of the electromagnetic wave signals. The antenna driving circuit 350 can transmit the processed electromagnetic wave signals to the mobile communication module. The mobile communication module can be arranged on the main circuit board 400.

[0085] The antenna driving circuit 350 can change the amplitude of the electromagnetic wave signal transmitted from the mobile communication module. Optionally, the antenna driving circuit 350 can not only change the amplitude of the electromagnetic wave signal transmitted from the mobile communication module, but also change the phase of these electromagnetic wave signals. The antenna driving circuit 350 can transmit the processed electromagnetic wave signal to the antenna electrode (for example, Figure 7 AE1 and AE2 in ).

[0086] Figure 5 is a plan view showing a display device 10 according to an embodiment of the present disclosure. Figure 6 is a plan view showing a display device 10 according to an embodiment of the present disclosure.

[0087] Figure 5 The implementation method and Figure 1 and Figure 2 The embodiment of FIG. 4 is different in that the protrusion area PA protrudes from the left side of the main area MA in the second direction (eg, the Y-axis direction). Figure 6 The implementation method and Figure 1 and Figure 2 The difference of the embodiment of FIG. 1 is that the protruding area PA protrudes from the right side of the main area MA in the second direction (for example, the Y-axis direction). Figure 5 and Figure 6 If detailed description is given, it will be understood that the elements are at least similar to corresponding elements that have been described elsewhere within the present disclosure.

[0088] like Figure 5 and Figure 6 As shown in FIG. 1 , the protrusion area PA may protrude from one side of the main area MA, and the one side of the main area MA may be any one of an upper side, a lower side, a left side, and a right side of the main area MA.

[0089] The protruding area PA may protrude from one side of the main area MA in the second direction (e.g., the Y-axis direction), and may be spaced apart from the sub-area SBA in the second direction (e.g., the Y-axis direction). In this case, the length of the protruding area PA in the first direction (e.g., the X-axis direction) may be shorter than the length of the sub-area SBA in the first direction (e.g., the X-axis direction), and the length of the protruding area PA in the second direction (e.g., the Y-axis direction) may be shorter than the length of the sub-area SBA in the second direction (e.g., the Y-axis direction), but the embodiments of the present disclosure are not necessarily limited thereto.

[0090] Figure 7 is a plan view showing a polarization layer PF according to an embodiment of the present disclosure. For example, Figure 7 Can be a reference Figure 4 Described is the layout diagram of the polarization layer PF.

[0091] refer to Figure 7 , the polarization layer PF may include a polarization portion POL corresponding to the display area DA and an antenna electrode AE ​​corresponding to the non-display area NDA. The polarization portion POL may include a linear polarization plate and / or a phase delay film such as a λ / 4 plate (quarter wave plate). The antenna electrode AE ​​is embedded in the polarization layer PF and may correspond to the non-display area NDA of the display panel 300.

[0092] The antenna electrode AE ​​may include a first antenna electrode AE1 disposed in a first non-display area NDA1 positioned at one side of the display area DA, and a second antenna electrode AE2 disposed in a second non-display area NDA2 disposed at the other side of the display area DA. In this case, one side and the other side of the display area DA may be adjacent to each other.

[0093] The non-display area NDA of the display panel 300 may surround the display area DA, and may be divided into a first non-display area NDA1, a second non-display area NDA2, a third non-display area NDA3, and a fourth non-display area NDA4. The first non-display area NDA1 and the third non-display area NDA3 may be disposed on a short side of the display panel 300, and may be opposite to each other with the display area DA interposed therebetween. The second non-display area NDA2 and the fourth non-display area NDA4 may be positioned on a long side of the display panel 300, and may be opposite to each other with the display area DA interposed therebetween.

[0094] According to an embodiment, the polarization layer PF may include an antenna electrode AE ​​in each of the first non-display area NDA1 and the second non-display area NDA2. However, embodiments of the present disclosure are not necessarily limited to positioning the antenna electrode AE ​​of the polarization layer PF in the first non-display area NDA1 and the second non-display area NDA2. For example, the antenna electrode AE ​​embedded in the polarization layer PF may be disposed in the first non-display area NDA1, the second non-display area NDA2, the third non-display area NDA3, and / or the fourth non-display area NDA4.

[0095] According to an embodiment of the present disclosure, the driving frequency of the first antenna electrode AE1 and the driving frequency of the second antenna electrode AE2 may be different from each other. Alternatively, the driving frequency of the first antenna electrode AE1 and the driving frequency of the second antenna electrode AE2 may be the same as each other.

[0096] According to an embodiment of the present disclosure, the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape.

[0097] According to an embodiment of the present disclosure, since the antenna electrode AE ​​is embedded in the polarization layer PF and disposed in the non-display area NDA, the display device 10 can prevent a visibility problem in which the antenna electrode AE ​​is visible to a user.

[0098] According to an embodiment of the present disclosure, the shape of the antenna electrode AE ​​embedded in the polarization layer PF may be based on the polarization portion POL (eg, a polyvinyl alcohol (PVA) layer ( Fig.13 For example, the polarization direction of the antenna electrode AE ​​may correspond to the direction of the extension axis of the PVA layer 1320 of the polarization layer PF.

[0099] In the following, reference will be made to Figures 8 to 10 The pattern shape of the antenna electrode AE ​​according to the direction of the elongated axis of the PVA layer 1320 of the polarization layer PF is described.

[0100] Figure 81 is a plan view showing the shape of the antenna electrode AE ​​when the elongated axis 801 of the PVA layer 1320 disposed in the polarization layer PF is in the first direction DR1 according to an embodiment of the present disclosure. Fig. 9 1 is a plan view showing the shape of the antenna electrode AE ​​when the elongated axis 901 of the PVA layer 1320 disposed in the polarization layer PF is in a diagonal direction according to an embodiment of the present disclosure. Fig.10 1 is a plan view illustrating a shape of the antenna electrode AE ​​when an elongated axis 1010 of a PVA layer 1320 disposed in a polarization layer PF is in a second direction DR2 according to an embodiment of the present disclosure.

[0101] refer to Figure 8 According to an embodiment of the present disclosure, the elongated axis 801 of the PVA layer 1320 of the polarization layer PF may be arranged in the first direction DR1 parallel to the short side of the display panel 300. In this case, each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the first direction DR1. Each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the first direction DR1 to cause the radio wave to be polarized in the first direction DR1.

[0102] refer to Fig. 9 According to an embodiment of the present disclosure, an elongated axis 901 of the PVA layer 1320 of the polarization layer PF may be arranged in a diagonal direction DR3 having a specified angle with respect to a short side of the display panel 300. In this case, each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the diagonal direction DR3. Each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the diagonal direction DR3 to cause the radio wave to be polarized in the diagonal direction DR3.

[0103] Fig. 9 The first antenna electrode AE1 and the second antenna electrode AE2 are shown in more detail. Fig. 9As shown in , the antenna electrode AE ​​provided in a specific non-display area NDA includes an X electrode 911 for X-axis polarization and a Y electrode 912 for Y-axis polarization. The X electrodes 911 may be connected to each other through a connection electrode 913. Likewise, the Y electrodes 912 may be connected to each other through a connection electrode 913. The X electrode 911 and the Y electrode 912 may be perpendicular to or parallel to the direction of the elongated axis 901 of the PVA layer 1320. For example, as shown, the X electrode 911 may be arranged parallel to the direction of the elongated axis 901 of the PVA layer 1320 (e.g., parallel to the diagonal direction DR3), and the Y electrode 912 may be arranged perpendicular to the direction of the elongated axis 901 of the PVA layer 1320 (e.g., parallel to the direction DR4 perpendicular to the diagonal direction DR3).

[0104] Fig. 9 The features of the X electrode 911 for X-axis polarization and the Y electrode 912 for Y-axis polarization described in Figure 8 and Fig.10 implementation method.

[0105] refer to Fig.10 According to an embodiment of the present disclosure, an elongated axis 1010 of the PVA layer 1320 of the polarization layer PF may be arranged in a second direction DR2 parallel to a long side of the display panel 300. In this case, each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the second direction DR2. Each of the first antenna electrode AE1 and the second antenna electrode AE2 may have a metal mesh shape patterned in the second direction DR2 to cause the radio wave to be polarized in the second direction DR2.

[0106] Fig.11 is a schematic cross-sectional view showing a stacking structure of a display panel 300 according to an embodiment of the present disclosure. For example, Fig.11 The display panel 300 shown in FIG. Figures 1 to 10 The display panels 300 described are substantially the same or similar.

[0107] refer to Fig.11 According to an embodiment of the present disclosure, the display panel 300 may include a display layer DISL disposed on a substrate SUB, a sensor electrode layer SENL disposed on the display layer DISL, a polarization layer PF including an antenna electrode AE ​​disposed on the sensor electrode layer SENL, and a cover window CW disposed on the polarization layer PF.

[0108] As reference Figures 7 to 10As described, the polarization layer PF may include the antenna electrode AE. According to an embodiment of the present disclosure, in the display panel 300, the polarization layer PF and the display layer DISL where the antenna electrode AE ​​is positioned are spaced apart from each other, thereby enhancing the antenna efficiency. For example, compared with a comparative example in which the antenna electrode AE ​​is embedded in the sensor electrode layer SENL, an embodiment of the present disclosure can reduce interference between the antenna electrode AE ​​and an electrode (e.g., a cathode electrode) disposed in the display layer DISL.

[0109] Fig.12 is a schematic cross-sectional view illustrating a stack structure of a display panel 300 according to an embodiment of the present disclosure.

[0110] Fig.12 The implementation method and Fig.11 The difference of the embodiment of FIG. 1 is that the polarization layer PF is arranged between the sensor electrode layer SENL and the display layer DISL. Fig.11 It has been described in the above that the polarization layer PF including the antenna electrode AE ​​is disposed on the sensor electrode layer SENL, but the embodiments of the present disclosure are not necessarily limited thereto. Fig.12 As shown in , the polarization layer PF including the antenna electrode AE ​​may be disposed between the sensor electrode layer SENL and the display layer DISL.

[0111] Fig.13 130 is a schematic cross-sectional view showing a stacked structure of a polarizing layer PF including a blackened coating layer 1301 according to an embodiment of the present disclosure. Fig.14 130 is a schematic cross-sectional view showing a stacked structure of a polarization layer PF further including an insulating film 1302 according to an embodiment of the present disclosure.

[0112] refer to Fig.13 and Fig.14 According to an embodiment of the present disclosure, the polarization layer PF may include a pressure-sensitive adhesive (PSA) layer 1310 which is an adhesive layer, a PVA layer 1320 which is disposed on the PSA layer 1310 and is a polarizing resin film, a metal layer 1330 which is disposed on the PVA layer 1320 and includes an antenna electrode AE, and a triacetyl cellulose (TAC) layer or a polyethylene terephthalate (PET) layer 1340 which is disposed on the metal layer 1330.

[0113] According to an embodiment of the present disclosure, the metal layer 1330 of the polarization layer PF may include a blackening coating 1301 covering the surface of the antenna electrode AE. The blackening coating 1301 serves to reduce the visibility of the antenna electrode AE ​​by reducing the reflectivity of the antenna electrode AE.

[0114] The blackening coating layer 1301 may include a plating film including copper. The plating film may cover the surface of the metal forming the antenna electrode AE.

[0115] The black coating layer 1301 may include a coating film of a silver halide salt. The coating film may cover the surface of the metal forming the antenna electrode AE.

[0116] The blackening coating layer 1301 may include a coating film including aluminum. The coating film may cover the surface of the metal forming the antenna electrode AE.

[0117] Uneven surface treatment may be applied to the surface of the metal forming the antenna electrode AE. Since the surface of the antenna electrode AE ​​is processed into an uneven shape, reflectivity may be reduced and visibility of the antenna electrode AE ​​may be reduced.

[0118] According to the embodiments of the present disclosure, Fig.14 As shown in FIG. 1 , the metal layer 1330 of the polarization layer PF may further include an insulating film 1302 covering the blackened coating layer 1301. The insulating film 1302 is used to prevent interference between a propagation signal transmitted and received through the antenna electrode AE ​​and the display layer DISL.

[0119] Fig.15 130 is a schematic cross-sectional view showing a stacked structure of a polarizing layer PF including a blackened coating layer 1301 according to an embodiment of the present disclosure. Fig.16 130 is a schematic cross-sectional view showing a stacked structure of a polarization layer PF further including an insulating film 1302 according to an embodiment of the present disclosure.

[0120] Fig.15 and Fig.16 The implementation method and Fig.13 and Fig.14 The embodiment of FIG. 1 is different in that the metal layer 1330 is provided as the uppermost layer of the polarization layer PF.

[0121] refer to Fig.15 and Fig.16 According to an embodiment of the present disclosure, the polarization layer PF may include a pressure-sensitive adhesive (PSA) layer 1310 which is an adhesive layer, a PVA layer 1320 which is disposed on the PSA layer 1310 and is a polarizing resin film, a triacetyl cellulose (TAC) layer or a polyethylene terephthalate (PET) layer 1340 which is disposed on the PVA layer 1320, and a metal layer 1330 which is disposed on the triacetyl cellulose (TAC) layer or the polyethylene terephthalate (PET) layer 1340 and includes an antenna electrode AE.

[0122] With Fig.13 and Fig.14 The same implementation method is implemented according to Fig.15 and Fig.16In an embodiment of the present invention, the metal layer 1330 may include a black coating layer 1301 covering the surface of the antenna electrode AE. In addition, an insulating film 1302 covering the black coating layer 1301 may also be provided.

[0123] Fig.17 is a schematic cross-sectional view showing the display device 10 for describing the connection between the antenna electrode AE ​​of the polarization layer PF and the antenna circuit board 340. For example, Fig.17 The polarization layer PF shown in FIG. Figures 1 to 10 The described polarizing layers PF are substantially the same or similar.

[0124] refer to Fig.17 According to an embodiment of the present disclosure, the display panel 300 of the electronic device may include a substrate ( Figure 4 SUB), a display layer DISL disposed on the substrate SUB, and an encapsulation layer ( Figure 4 ENC), a sensor electrode layer SENL arranged on the encapsulation layer ENC, and a polarization layer PF arranged on the sensor electrode layer SENL.

[0125] The polarization layer PF is a component disposed on the sensor electrode layer SENL, and may include a pressure-sensitive adhesive (PSA) layer 1310 which is an adhesive layer, a PVA layer 1320 which is disposed on the PSA layer 1310 and is a polarizing resin film, a metal layer 1330 which is disposed on the PVA layer 1320 and includes an antenna electrode AE, and a triacetyl cellulose (TAC) layer or a polyethylene terephthalate (PET) layer 1340 disposed on the metal layer 1330.

[0126] According to an embodiment of the present disclosure, the polarization layer PF may include an antenna wiring and an antenna pad ( Figure 1 The antenna pad APD may be disposed on one side of the polarization layer PF positioned in the non-display area NDA. The antenna FPCB 1701 may be attached to the antenna pad APD, and the antenna pad APD may be electrically connected to a circuit board 1710 in which an antenna driving circuit (e.g., RF-IC) 1712 is disposed through the antenna FPCB 1701. The circuit board 1710 may be a reference Figures 1 to 5 The main circuit board 400 or the antenna circuit board 340 is described.

[0127] Not only an antenna driving circuit (e.g., RF-IC) 1712 but also a touch driving circuit (e.g., touch IC (or T-IC)) 1711 may be provided in the circuit board 1710. In this case, the touch driving circuit (e.g., touch IC (or T-IC)) 1711 may be electrically connected to the touch electrode of the sensor electrode layer SENL through the touch FPCB 1702 attached to one side of the sensor electrode layer SENL corresponding to the non-display area NDA.

[0128] Fig.18 is a schematic cross-sectional view showing the display device 10 for describing the connection between the antenna electrode AE ​​of the polarization layer PF and the antenna circuit board 340. For example, Fig.18 The polarization layer PF shown in FIG. Figures 1 to 10 The described polarizing layers PF are substantially the same or similar.

[0129] Fig.18 The implementation method and Fig.17 The embodiment of is different in that the antenna electrode AE ​​of the polarization layer PF is connected to the sensor electrode layer SENL through a through hole 1801 .

[0130] refer to Fig.18 According to an embodiment of the present disclosure, the polarization layer PF may include a through hole 1801 for connecting the antenna electrode AE ​​with the sensor electrode layer SENL.

[0131] The sensor electrode layer SENL may include an antenna wiring and an antenna pad (eg, Figure 1 of APD).

[0132] The antenna pad APD may be provided on one side of the sensor electrode layer SENL positioned in the non-display area NDA. The antenna FPCB 1701 may be attached to the antenna pad APD, and the antenna pad APD may be electrically connected to a circuit board 1710 in which an antenna driving circuit (e.g., RF-IC) 1712 is provided through the antenna FPCB 1701. In this case, the circuit board 1710 may be a reference Figures 1 to 5 The main circuit board 400 or the antenna circuit board 340 is described.

[0133] Not only the antenna driving circuit (e.g., RF-IC) 1712 but also the touch driving circuit (e.g., touch IC (or T-IC)) 1711 may be provided in the circuit board 1710. In this case, the touch driving circuit (e.g., touch IC (or T-IC)) 1711 may be electrically connected to the touch electrode of the sensor electrode layer SENL through the touch FPCB 1702 attached to one side of the sensor electrode layer SENL corresponding to the non-display area NDA.

[0134] exist Fig.18 In the embodiment of the present invention, the antenna FPCB 1701 and the touch FPCB 1702 are separately provided, but the display device 10 may combine these FPCBs into one FPCB. In this case, the circuit board 1710 in which the antenna driving circuit (e.g., RF-IC) 1712 is provided may be connected to the antenna pad APD through the antenna FPCB 1701. In addition, the touch driving circuit (e.g., touch IC (or T-IC)) 1711 may be electrically connected to the touch electrode of the sensor electrode layer SENL through the touch FPCB 1702 attached to one side of the sensor electrode layer SENL corresponding to the non-display area NDA.

[0135] In the display device 10 and the mobile electronic device including the display device 10 according to an embodiment of the present disclosure, the polarizing film (or polarizing layer PF) of the display panel 300 may include an antenna for communication, thereby widening the design space for arrangement of components of the electronic device.

[0136] In addition, the antenna electrode AE ​​may be disposed in a polarizing film, whereby interference between the display layer DISL of the display panel 300 and the antenna electrode AE ​​may be reduced, and antenna efficiency may be enhanced.

[0137] At the conclusion of the detailed description, those skilled in the art will appreciate that many changes and modifications can be made to the preferred embodiment without substantially departing from the principles of the invention.

Claims

1. A display device, comprising: The display panel includes a display area and a non-display area. Wherein, the display panel comprises: substrate; A display layer, disposed on the substrate; An encapsulation layer, disposed on the display layer; a sensor electrode layer, disposed on the packaging layer; and A polarization layer is disposed on the sensor electrode layer, wherein the polarization layer includes a polarization portion corresponding to the display area and an antenna electrode corresponding to the non-display area.

2. The display device according to claim 1, wherein: The polarizing layer comprises: a pressure sensitive adhesive layer; a polyvinyl alcohol layer disposed on the pressure-sensitive adhesive layer; a metal layer, disposed on the polyvinyl alcohol layer, wherein the metal layer includes the antenna electrode; and The triacetyl cellulose layer or the polyethylene terephthalate layer is disposed on the metal layer.

3. The display device according to claim 2, wherein: The antenna electrode comprises: a first antenna electrode disposed in a first non-display area at a first side of the display area; and a second antenna electrode disposed in a second non-display area at a second side of the display area, The first side and the second side of the display area are adjacent to each other.

4. The display device according to claim 3, wherein: The elongated axis of the polyvinyl alcohol layer is arranged in a first direction parallel to the short side of the display panel, and Wherein, each of the first antenna electrode and the second antenna electrode has a metal mesh shape.

5. The display device according to claim 3, wherein: The extended axis of the polyvinyl alcohol layer is arranged in a second direction parallel to the long side of the display panel, and Wherein, each of the first antenna electrode and the second antenna electrode has a metal mesh shape.

6. The display device according to claim 2, wherein: The extended axis of the polyvinyl alcohol layer is arranged in a diagonal direction having a specified angle with respect to a short side of the display panel, The antenna electrode comprises a first antenna electrode and a second antenna electrode arranged in different directions, and Wherein, each of the first antenna electrode and the second antenna electrode has a metal mesh shape.

7. The display device according to claim 2, wherein: The metal layer further includes a blackening coating covering a surface of the antenna electrode.

8. The display device according to claim 7, wherein: The blackened coating includes a plating film including copper.

9. The display device according to claim 7, wherein: The blackened coating includes a silver halide salt.

10. The display device according to claim 7, wherein: The blackened coating includes a coating film including aluminum.

11. The display device according to claim 7, wherein: The metal layer further includes an insulating film covering the blackened coating layer.

12. The display device according to claim 1, wherein: The polarizing layer comprises: a pressure sensitive adhesive layer; a polyvinyl alcohol layer disposed on the pressure-sensitive adhesive layer; A triacetyl cellulose layer disposed on the polyvinyl alcohol layer; and The metal layer is disposed on the triacetyl cellulose layer, and the metal layer includes the antenna electrode.

13. The display device according to claim 1, wherein: The polarizing layer comprises: a pressure sensitive adhesive layer; a polyvinyl alcohol layer disposed on the pressure-sensitive adhesive layer; a polyethylene terephthalate layer disposed on the polyvinyl alcohol layer; and The metal layer is disposed on the polyethylene terephthalate layer, and the metal layer includes the antenna electrode.

14. The display device according to claim 1, wherein: The polarization layer further includes an antenna wiring and an antenna pad, each of which is electrically connected to the antenna electrode, and Wherein, the antenna pad is connected to the antenna flexible printed circuit board.

15. The display device according to claim 1, wherein: The polarization layer further includes a through hole connecting the antenna electrode to the sensor electrode layer, wherein the sensor electrode layer includes an antenna wiring and an antenna pad electrically connected to the through hole, and Wherein, the antenna pad is connected to the touch flexible printed circuit board.

16. A mobile electronic device comprising the display device according to any one of claims 1 to 15.

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