Antenna device and display device

Abstract

An antenna device and a display device are provided. The antenna device includes a feed line, a dielectric interlayer disposed on the feed line, and an antenna sheet detachably coupled to the dielectric interlayer. The antenna sheet includes a protective sheet and a radiation pattern formed on a surface of the protective sheet. The antenna sheet can be used to combine an antenna having a locally applicable frequency with a display device.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2020-0072432 filed on June 15, 2020, in the Korean Intellectual Property Office (KIPO), the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present invention relates to an antenna device and a display device, and more particularly to an antenna device including an electrode and a dielectric layer, and a display device including the antenna device. Background Art

[0004] With the development of information technology, wireless communication technologies such as Wi-Fi, Bluetooth, etc. are combined with display devices such as smart phones. In this case, an antenna can be combined with the display device to provide a communication function.

[0005] Furthermore, as high-frequency and ultra-high-frequency mobile communication functions are applied to display devices, an antenna capable of achieving high-frequency or ultra-high-frequency radiation characteristics is required in the display device.

[0006] However, even in high-frequency and ultra-high-frequency mobile communications, different countries may use different frequency bands. Furthermore, display devices equipped with antennas are becoming thinner while having relatively large display areas. Therefore, it may not be possible to incorporate antennas corresponding to different frequency bands in different countries into a single display device.

[0007] When an antenna is inserted into a display device, the antenna's radiation characteristics may be shielded by the various electrodes and wiring of the display device. Therefore, using a high-frequency or ultra-high-frequency antenna that may be susceptible to signal loss may not achieve sufficient gain and broadband characteristics.

[0008] For example, Korean Patent Laid-Open Application No. 2003-0095557 discloses an antenna structure embedded in a portable terminal, but the antenna structure disclosed therein cannot sufficiently meet the above-mentioned latest requirements. Summary of the Invention

[0009] According to one aspect of the present invention, there is provided an antenna device having improved radiation coverage and gain characteristics.

[0010] According to one aspect of the present invention, there is provided a display device including an antenna device having improved radiation coverage and gain characteristics.

[0011] (1) An antenna device comprising: a feed line; a dielectric interlayer provided on the feed line; and an antenna sheet detachably coupled to the dielectric interlayer, the antenna sheet comprising a protective sheet and a radiation pattern formed on a surface of the protective sheet.

[0012] (2) The antenna device according to (1) above, wherein the radiation pattern overlaps with one end portion of the feed line in the thickness direction.

[0013] (3) The antenna device according to (2) above, wherein the radiation pattern and the feed line are physically separated with a dielectric interlayer interposed therebetween.

[0014] (4) The antenna device according to (2) above, further comprising a via structure that penetrates the dielectric interlayer and connects one end portion of the feed line and the radiation pattern to each other.

[0015] (5) The antenna device according to (2) above, further comprising a via structure connected to one end portion of the feed line and partially penetrating the dielectric interlayer.

[0016] (6) The antenna device according to (5) above, wherein the via structure is physically separated from the radiation pattern.

[0017] (7) The antenna device according to (6) above, wherein the dielectric interlayer includes a first dielectric interlayer and a second dielectric interlayer stacked in order from the feed line, and the via structure is formed in the first dielectric interlayer and does not extend into the second dielectric interlayer.

[0018] (8) The antenna device according to (7) above, wherein the first dielectric interlayer includes an adhesive layer, and the second dielectric interlayer includes a window sheet.

[0019] (9) The antenna device according to (1) above, further comprising a base dielectric layer on which the feed line is formed.

[0020] (10) The antenna device according to (9) above, further comprising an inner antenna unit provided on the base dielectric layer.

[0021] (11) The antenna device according to (10) above, wherein the inner antenna unit includes an inner radiation pattern and a transmission line extending from the inner radiation pattern.

[0022] (12) The antenna device according to (11) above, wherein the internal antenna unit and the feeder line are separated from each other at the same level or layer.

[0023] (13) The antenna device according to (1) above, wherein the antenna sheet further includes an alignment pattern formed on the protection sheet around the radiation pattern.

[0024] (14) A display device comprising: a display panel; and the antenna device according to the above embodiment stacked on the display panel.

[0025] (15) The display device according to (14) above, wherein the dielectric interlayer includes a window sheet, and the antenna sheet is attached to the window sheet.

[0026] The antenna device according to an embodiment of the present invention may include an antenna sheet including a radiation pattern formed on a detachable protective sheet. The antenna sheet may be attached to a dielectric interlayer to overlap with a feed line with the dielectric interlayer interposed therebetween.

[0027] Therefore, even when the frequency environment in each region (or each country) changes, it is possible to easily replace the antenna sheet including the radiation pattern suitable for the frequency environment.

[0028] For example, the antenna sheet can be detachably attached to the window surface of a display device such as a smartphone. Therefore, radiation interference caused by the conductive structure included in the display device can be reduced, and multi-band or broadband communication functions can be easily applied to the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 and Figure 2 1 and 2 are respectively a schematic cross-sectional view and a schematic top plan view showing an antenna device according to an exemplary embodiment.

[0030] Figure 3 and Figure 4 is a schematic cross-sectional view illustrating an antenna device according to some exemplary embodiments.

[0031] Figure 5 is a schematic top plan view illustrating an antenna device according to some exemplary embodiments.

[0032] Figure 6 and Figure 7 1 and 2 are respectively a schematic cross-sectional view and a schematic top plan view showing a display device according to an exemplary embodiment. DETAILED DESCRIPTION

[0033] According to an exemplary embodiment of the present invention, an antenna device including a detachable antenna sheet is provided. According to an exemplary embodiment of the present invention, a display device including the antenna device and capable of providing broadband communication functionality is also provided. Applications of the antenna device are not limited to display devices, and the antenna device can be applied to various objects or structures, such as vehicles, household appliances, and buildings.

[0034] The antenna device may be, for example, a microstrip patch antenna fabricated in the form of a transparent film. The antenna device may be used in communication devices for high-band or ultra-high-band mobile communications, such as those corresponding to 3G, 4G, 5G, or higher mobile communications. For example, the antenna device may be operable in a high-band or ultra-high-band frequency range of approximately 1 GHz or higher, and in one embodiment, approximately 20 GHz to 60 GHz. The antenna device may also operate in a frequency range of, for example, 1 GHz or lower.

[0035] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, it will be understood by those skilled in the art that these embodiments described with reference to the accompanying drawings are provided to further understand the spirit of the present invention and are not intended to limit the subject matter disclosed in the detailed description and the appended claims.

[0036] Figure 1 and Figure 2 1 and 2 are schematic cross-sectional views and schematic top plan views respectively showing an antenna device according to an exemplary embodiment. Specifically, Figure 2 1 is a top plan view showing the antenna sheet 150 of the antenna device.

[0037] Reference Figure 1 and Figure 2 , the antenna device may include a detachable antenna sheet 150 , which includes a protection sheet 140 and a radiation pattern 130 .

[0038] The protective sheet 140 may be used as, for example, a substrate or base film for forming the radiation pattern 130 and may be used as an upper dielectric layer of the radiation pattern 130. The protective sheet 140 may include an organic resin material having detachable adhesive properties. In some embodiments, the protective sheet 140 may include a laminated structure of a substrate and an adhesive layer.

[0039] For example, the substrate may include a transparent resin material such as acrylic resin, olefin resin, polyimide resin, and polyurethane resin. The substrate may include an inorganic insulating material such as glass, silicon oxide, and silicon nitride.

[0040] The radiation pattern 130 may be formed on one surface of the protective sheet 140. In some embodiments, the radiation pattern 130 may be formed on a substrate, and an adhesive layer may be formed on one surface of the protective sheet 140 to cover the radiation pattern 130. In one embodiment, a release film may be formed on the adhesive layer.

[0041] For example, Figure 2 As shown, the radiation pattern 130 may be formed on the peripheral portion of the protective sheet 140. As will be described later, when the antenna sheet 150 is attached to a visible surface or window surface of a display device, the radiation pattern 130 may be provided on the peripheral portion to prevent degradation of an image achieved by the display device.

[0042] The radiation pattern 130 may include silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), chromium (Cr), titanium (Ti), tungsten (W), niobium (Nb), tantalum (Ta), vanadium (V), iron (Fe), manganese (Mn), cobalt (Co), nickel (Ni), zinc (Zn), tin (Sn), molybdenum (Mo), calcium (Ca), or an alloy containing at least one of these metals. These may be used alone or in combination.

[0043] For example, the radiation pattern 130 may include silver (Ag) or a silver alloy (eg, silver-palladium-copper (APC)) or copper (Cu) or a copper alloy (eg, copper-calcium (CuCa)) to achieve low resistance and fine line width patterns.

[0044] In one embodiment, the radiation pattern 130 may include a transparent conductive oxide, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnOx), indium zinc tin oxide (IZTO), or the like.

[0045] In some embodiments, the radiation pattern 130 may include a stacked structure of a transparent conductive oxide layer and a metal layer. For example, the radiation pattern 130 may include a double-layer structure of a transparent conductive oxide layer and a metal layer, or a triple-layer structure of a transparent conductive oxide layer, a metal layer, and a transparent conductive oxide layer. In this case, the metal layer can improve flexibility, and the low resistance of the metal layer can increase signal transmission speed. The transparent conductive oxide layer can also improve corrosion resistance and transparency.

[0046] In some embodiments, the radiation pattern 130 may have a mesh pattern structure. Therefore, even when the antenna sheet 150 is attached to a visible surface of the display device, the radiation pattern 130 may have improved light transmittance and may be prevented from being visually recognized by a user.

[0047] like Figure 2 As shown, the radiation pattern 130 may have a polygonal flat plate shape. However, the shape of the radiation pattern 130 may be appropriately changed in consideration of the design and radiation characteristics of the display device. For example, the radiation pattern 130 may have a shape such as a circle or an ellipse.

[0048] The antenna sheet 150 may be attached to the dielectric interlayer 110 to be coupled to the feed line 120. The feed line 120 may be formed on the base dielectric layer 100.

[0049] The base dielectric layer 100 and / or the dielectric interlayer 110 may include, for example, a transparent resin material. For example, the base dielectric layer 100 and / or the dielectric interlayer 110 may include polyester resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate and polybutylene terephthalate; cellulose resins such as diacetyl cellulose and triacetyl cellulose; polycarbonate resins; acrylic resins such as polymethyl (meth)acrylate and polyethyl (meth)acrylate; styrene resins such as polystyrene and acrylonitrile-styrene copolymer; polyolefin resins such as polyethylene, polypropylene, cycloolefin or polyolefin with a norbornene structure and ethylene-propylene copolymer; vinyl chloride resins; amide resins such as nylon and aromatic polyamide; imide resins; polyethersulfone resins; sulfone resins; polyetheretherketone resins; polyphenylene sulfide resins; vinyl alcohol resins; vinylidene chloride resins; vinyl butyral resins; allyl resins; polyoxymethylene resins; epoxy resins; polyurethane or acrylic polyurethane resins; silicone resins, etc. These may be used alone or in combination of two or more.

[0050] In some embodiments, an adhesive film such as an optically clear adhesive (OCA) or an optically clear resin (OCR) may be included in the base dielectric layer 100 and / or the dielectric interlayer 110. In some embodiments, the base dielectric layer 100 and / or the dielectric interlayer 110 may include an inorganic insulating material such as silicon oxide, silicon nitride, silicon oxynitride, glass, etc.

[0051] In some embodiments, the dielectric constant of the base dielectric layer 100 and / or the dielectric interlayer 110 may be adjusted to a range of about 1.5 to about 12. When the dielectric constant exceeds about 12, the driving frequency achieved by the radiation pattern 130 may be excessively reduced, thereby failing to achieve desired high frequency or ultra-high frequency driving.

[0052] The feeding line 120 may be disposed on the base dielectric layer 100 , and the dielectric interlayer 110 may be stacked on the base dielectric layer 100 and the feeding line 120 .

[0053] The feeding line 120 may include the metal or alloy described above. The feeding line 120 may be formed as a solid metal pattern to reduce feeding resistance and facilitate signal transmission.

[0054] In an exemplary embodiment, the feeding line 120 may be physically separated from the radiation pattern 130 with the dielectric interlayer 110 interposed therebetween. For example, the radiation pattern 130 may be a floating electrode separated from the feeding line 120 by the dielectric interlayer 110.

[0055] In some embodiments, one end of the feed line 120 may overlap with the radiation pattern 130 in the thickness direction of the antenna device, and an opposite end of the feed line 120 may be bonded to the circuit board 160 .

[0056] The circuit board 160 may include a flexible printed circuit board (FPCB), for example. For example, a conductive bonding structure such as anisotropic conductive film (ACF) may be bonded to the opposite ends of the feed line 120, and then the circuit board 160 may be heated and pressed against the conductive bonding structure.

[0057] An antenna driver integrated circuit (IC) chip may be mounted on the circuit board 160. In one embodiment, an intermediate circuit board such as a rigid printed circuit board may be provided between the circuit board 160 and the antenna driver IC chip. In one embodiment, the antenna driver IC chip may be mounted directly on the circuit board 160.

[0058] Power can be supplied from the antenna driving IC chip to the feed line 120 via the circuit board 160, and an electric field can be generated between the radiation pattern 130 and the feed line 120 in the dielectric interlayer 110. Therefore, antenna radiation can be achieved by coupling the radiation pattern 130 and the feed line 120.

[0059] In some embodiments, a ground layer 90 may be formed on the bottom surface of the base dielectric layer 100. The ground layer 90 may facilitate generation of an electric field in the feed line 120 and may absorb or shield electrical noise around the feed line 120.

[0060] In some embodiments, the ground layer 90 can be included as a separate element of the antenna device. In some embodiments, a conductive member of the display device to which the antenna device is mounted can serve as a ground layer.

[0061] The conductive member may include, for example, a gate electrode of a thin film transistor (TFT) included in the display panel, various wirings such as a scan line or a data line, or various electrodes such as a pixel electrode and a common electrode.

[0062] In one embodiment, various structures including a conductive material disposed below the display panel may serve as the ground layer 90. For example, a metal plate (e.g., a stainless steel plate such as a SUS plate), a pressure sensor, a fingerprint sensor, an electromagnetic wave shielding layer, a heat sink, a digitizer, etc. may serve as the ground layer 90.

[0063] According to the exemplary embodiment described above, the detachable antenna sheet 150 can be attached to the dielectric interlayer 110 to couple to the feed line 120, thereby achieving antenna radiation drive. Therefore, the antenna sheet 150 formed with the radiation pattern 130 can be easily replaced according to the frequency environment of each region (or each country).

[0064] Therefore, even if radiation patterns for all frequencies are not inserted into the display device, a desired communication function can be achieved by attaching and detaching the antenna sheet 150 .

[0065] The antenna sheet 150 can be attached to or detached from the window surface of the display device. Therefore, radiation interference caused by the conductive structure included in the display device can be reduced, and a multi-band or broadband communication function can be easily applied to the display device.

[0066] In some embodiments, as Figure 2 As shown, an alignment pattern 135 may be further formed on the protective sheet 140 around the radiation pattern 130. When the antenna sheet 135 is attached and detached relative to the window surface using the alignment pattern 135, the antenna sheet 150 may be easily aligned and attached to overlap the one end of the feed line 120.

[0067] Figure 3 and Figure 4 is a schematic cross-sectional view illustrating an antenna device according to some exemplary embodiments.

[0068] Reference Figure 3 The radiation pattern 130 included in the antenna sheet 150 may be connected to the feed line 120 through the via structure 125. For example, the via structure 125 may be formed through the dielectric interlayer 110 and may contact the one end portion of the feed line 120 and the bottom surface of the radiation pattern 130.

[0069] The via structure 125 may include the metal or alloy mentioned above to reduce the feeding resistance. The via structure 125 may further improve the power supply efficiency from the feeding line 120 to the radiation pattern 130 .

[0070] Reference Figure 4 The dielectric interlayer 110 may have a multi-layer structure. For example, the dielectric interlayer 110 may include a first dielectric interlayer 112 and a second dielectric interlayer 115 .

[0071] In some embodiments, the first dielectric interlayer 112 may include an adhesive layer such as an OCA film. The second dielectric interlayer 115 may be stacked on the first dielectric interlayer 112 and may include a window sheet for a display device. The window sheet may include, for example, a window film for a display device or a hard coating film or glass (e.g., ultra-thin glass (UTG)) for a window substrate.

[0072] In an exemplary embodiment, the via structure 125 may partially penetrate the dielectric interlayer 110. For example, the via structure 125 may be formed in the first dielectric interlayer 112 and may not extend into the second dielectric interlayer 115. Therefore, the radiation pattern 130 may not contact the feeding line 120 and the via structure 125 and may be a suspended pattern on the second dielectric interlayer 115.

[0073] As reference Figure 1 As described above, antenna radiation can be achieved by generating an electric field through coupling between the feed line 120 and the radiation pattern 130. The via structure 125 can serve as a radiation guide pattern that can promote coupling or electric field generation.

[0074] Figure 5 : is a schematic top plan view showing an antenna device according to some exemplary embodiments. For ease of description, Figure 5 The dielectric interlayer 110 and the protection sheet 140 are omitted in the figure.

[0075] Reference Figure 5 , in addition to reference Figures 1 to 4 In addition to the radiation pattern 130 included in the described antenna sheet 150, the antenna device may further include an internal antenna unit 170. In an exemplary embodiment, the internal antenna unit 170 and the radiation pattern 130 may be located at different layers or different levels.

[0076] For example, the internal antenna unit 170 may be formed on the base dielectric layer 100 together with the feed line 120 and may be inserted into the display device in the form of a patch antenna. As described above, the radiation pattern 130 may be formed on the protective sheet 140 and disposed on the dielectric interlayer 110.

[0077] The inner antenna unit 170 may include an inner radiation pattern 172 and a transmission line 174. The inner radiation pattern 172 may have, for example, a polygonal flat plate shape, and the transmission line 174 may extend from one side of the inner radiation pattern 172. The transmission line 174 may be formed as a single member substantially integral with the inner radiation pattern 172.

[0078] The internal antenna unit 170 may further include a signal pad 176. The signal pad 176 may be connected to one end of the transmission line 174. In one embodiment, the signal pad 176 may be formed as a substantially integral member with the transmission line 174, and the one end of the transmission line 174 may be provided as the signal pad 176.

[0079] In some embodiments, the ground pads 178 may be disposed around the signal pads 176. For example, a pair of ground pads 178 may face each other with the signal pad 178 interposed therebetween. The ground pads 178 may be electrically and physically separated from the transmission line 174 around the signal pads 176.

[0080] The inner antenna unit 170 may include the above-mentioned metal or alloy (e.g., APC alloy or CuCa alloy). The inner antenna unit 170 may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), cadmium tin oxide (CTO), etc.

[0081] In some embodiments, the internal antenna unit 170 may include a multilayer structure of a transparent conductive oxide layer and a metal layer. For example, the internal antenna unit 170 may have a double-layer structure of a transparent conductive oxide layer and a metal layer, or a triple-layer structure of a transparent conductive oxide layer, a metal layer, and a transparent conductive oxide layer.

[0082] The internal radiation pattern 172 may be disposed in a display area of ​​the display device. In some embodiments, a portion of the transmission line 174 may also be disposed in the display area.

[0083] Therefore, the radiation pattern 172 and the transmission line 174 may be formed to include a mesh pattern structure to prevent a reduction in light transmittance in the display area.

[0084] The signal pad 176 and the ground pad 178 may be formed as a solid metal pattern to reduce feeding resistance and prevent signal loss through the circuit board 160. In one embodiment, the transmission line 174 may partially include a solid metal pattern.

[0085] Figure 1 The circuit board 160 shown may be joined to the opposite ends of the feed line 120 on the signal pad 176. A ground pad 178 may be arranged around the signal pad 176 to further improve the joining stability of the circuit board 160.

[0086] For example, the internal antenna unit 170 may be an antenna that can be applied to a display device as a single product. The internal antenna unit 170 may provide predetermined antenna radiation, and the detachable antenna sheet 150 may be used to further expand the radiation coverage according to the local frequency environment.

[0087] Figure 6 and Figure 7 are respectively a schematic cross-sectional view and a schematic top plan view showing a display device according to an exemplary embodiment. Figure 7 The diagram illustrates the window side or front side of a display device manufactured in the form of a smartphone.

[0088] Reference Figure 6 , the display device 200 may include a display panel 230 and the above-mentioned antenna device stacked on the display panel 230 .

[0089] The display panel 230 may include a panel substrate, a TFT circuit structure formed on the panel substrate, a pixel electrode connected to the TFT circuit structure, a display layer (e.g., an organic light-emitting layer or a liquid crystal layer) formed on the pixel electrode, a common electrode covering the display layer, an encapsulation layer covering the common electrode, etc. For example, the display panel 230 may be an organic light-emitting diode (OLED) panel.

[0090] The antenna device described above can be stacked on the display panel 230. For example, the detachable antenna sheet 150 can be stacked on the dielectric interlayer 110. The dielectric interlayer 110 can include a window sheet that provides a window surface for the display device as described above. In one embodiment, the window sheet can be stacked on the dielectric interlayer 110, and the antenna sheet 150 can be attached to the window sheet.

[0091] A touch sensor layer 240 and a polarization layer 250 may also be included between the display panel 230 and the antenna device. For example, the touch sensor layer 240, the polarization layer 250, and the antenna device may be stacked sequentially starting from the display panel 230. In this case, the sensing electrodes included in the touch sensor layer 240 can be effectively prevented from being visually recognized by the user. In addition, the polarization layer 250 may be included as a lower dielectric layer of the antenna device.

[0092] Reference Figure 7 , the display device 200 may include a display area 210 and a peripheral area 220. For example, the peripheral area 220 may be located on two lateral portions and / or two end portions of the display area 210.

[0093] In some embodiments, the feeding line 120 of the antenna device may be disposed in a peripheral region of the display device, and the radiation pattern 130 included in the antenna sheet 150 may be at least partially disposed on the display region 210 .

[0094] The peripheral area 220 may correspond to a light shielding portion or a frame portion of the image display device, for example. In addition, a driving circuit such as a driver integrated circuit (IC) chip for the display device 200 and / or the antenna may be provided in the peripheral area 220 .

[0095] The circuit board 160 may be disposed in the peripheral area 220 and may be bent toward the rear of the display device 200 to be electrically connected to the main board or the antenna driving IC chip.

Claims

1. A display device, characterized in that: It includes: Display panel; as well as An antenna device stacked on the display panel, wherein the antenna device comprises: feeder; a dielectric interlayer disposed on the feeder line; an antenna sheet detachably combined with the dielectric interlayer, the antenna sheet including a protection sheet and a radiation pattern formed on a surface of the protection sheet so as to overlap only one end portion of the feed line in a thickness direction; and a circuit board joined to the other end of the feed line, wherein the radiation pattern is separated from the circuit board, The display device includes a display area and a peripheral area, The feed line is provided in the outer peripheral region and is formed as a solid metal pattern, and The radiation pattern is disposed on the display area and has a mesh pattern structure.

2. The display device according to claim 1, wherein The radiation pattern and the feed line are physically separated with the dielectric interlayer interposed therebetween.

3. The display device according to claim 1, wherein It also includes a via structure that penetrates the dielectric interlayer and connects the one end portion of the feed line and the radiation pattern to each other.

4. The display device according to claim 1, wherein It also includes a via structure connected to the one end portion of the feed line and partially penetrating the dielectric interlayer.

5. The display device according to claim 4, wherein: The via structure is physically separated from the radiation pattern.

6. The display device according to claim 5, wherein: The dielectric interlayer includes a first dielectric interlayer and a second dielectric interlayer stacked in sequence starting from the feed line, and The via structure is formed in the first dielectric interlayer and does not extend into the second dielectric interlayer.

7. The display device according to claim 6, wherein: The first dielectric interlayer includes an adhesive layer, and the second dielectric interlayer includes a window sheet.

8. The display device according to claim 1, wherein It also includes a base dielectric layer, and the feed line is formed on the base dielectric layer.

9. The display device according to claim 8, wherein: It also includes an internal antenna unit disposed on the base dielectric layer.

10. The display device according to claim 9, wherein The internal antenna unit includes an internal radiation pattern and a transmission line extending from the internal radiation pattern.

11. The display device according to claim 10, wherein: The internal antenna unit and the feed line are separated from each other at the same level or layer.

12. The display device according to claim 1, wherein The antenna sheet further includes an alignment pattern formed on the protection sheet around the radiation pattern.

13. The display device according to claim 1, wherein The dielectric interlayer includes a window sheet, and the antenna sheet is attached to the window sheet.

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