Antenna device and display device

Abstract

The present invention provides an antenna device and a display device. The antenna device includes a base dielectric layer, a feeder line disposed on the base dielectric layer, and a decorative film disposed on the base dielectric layer and spaced apart from the feeder line. The decorative film includes a slit intersecting the feeder line in a plan view. The decorative film achieves slot antenna characteristics in a frame area or non-display area.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from Korean Patent Application No. 10-2020-0062075 filed on May 25, 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 in particular 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 in the form of, for example, smart phones. In this case, an antenna can be combined with the display device to provide a communication function.

[0005] Furthermore, with the development of thin, highly transparent, and high-resolution display devices such as transparent displays, flexible displays, etc., an antenna having improved transmission / reception sensitivity, enhanced gain, and broadband characteristics within a limited thickness is required.

[0006] However, as display devices equipped with antennas become thinner and lighter, the space for the antennas may also be reduced. Therefore, it may not be easy to realize a broadband antenna with sensitivity to various types of signals.

[0007] Furthermore, in high-frequency or ultra-high-frequency antennas used for, for example, the latest 5G high-frequency band communications, signal loss may easily occur and high gain and broadband characteristics may not be easily achieved.

[0008] Therefore, it may be necessary to develop an antenna that can achieve broadband, high gain, and high frequency / ultra-high frequency characteristics in a limited space. For example, Korean Patent Application Publication No. 2003-0095557 discloses an antenna structure embedded in a portable terminal, but the antenna structure disclosed therein cannot fully meet the above-mentioned latest requirements. Summary of the Invention

[0009] According to one aspect of the present invention, an antenna apparatus with improved coverage and space efficiency is provided.

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

[0011] (1) An antenna device comprising: a base dielectric layer; a feed line provided on the base dielectric layer; and a decorative film provided on the base dielectric layer and spaced apart from the feed line, the decorative film including a slit intersecting the feed line in a plan view.

[0012] (2) The antenna device according to (1) above, further comprising a first dielectric layer formed on the base dielectric layer for separating the feed line and the decorative film from each other.

[0013] (3) The antenna device according to (2) above, wherein the first dielectric layer includes an adhesive layer.

[0014] (4) The antenna device according to (3) above, further comprising a window sheet on which a decorative film is formed, wherein the window sheet is attached to the first dielectric layer so that the decorative film overlaps with the feed line.

[0015] (5) The antenna device according to (1) above, wherein the slot extends in the horizontal direction and the feed line extends in the vertical direction.

[0016] (6) The antenna device according to (1) above, wherein the slot extends in the vertical direction, and the feed line includes a portion extending in the horizontal direction.

[0017] (7) The antenna device according to (6) above, wherein the feed line includes a first portion extending in a horizontal direction and a second portion extending from the first portion in a vertical direction.

[0018] (8) The antenna device according to (1) above, wherein the slot includes a first slot extending in a horizontal direction and a second slot extending in a vertical direction.

[0019] (9) The antenna device according to (8) above, wherein the feed line includes: a first feed line extending in the vertical direction and crossing the first slot; and a second feed line including a portion extending in the horizontal direction so as to cross the second slot.

[0020] (10) The antenna device according to (1) above, further comprising a patch antenna unit provided on the base dielectric layer.

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

[0022] (12) The antenna device according to (11) above, wherein the decorative film includes an upper side portion and a lower side portion, the radiation pattern is located outside the upper side portion of the decorative film in a plan view, and the feed line does not extend beyond the upper side portion of the decorative film in a plan view.

[0023] (13) The antenna device according to (1) above, wherein the feed line is provided on a top surface or a bottom surface of the base dielectric layer.

[0024] (14) The antenna device according to (13) above, further comprising a second dielectric layer provided on the bottom surface of the base dielectric layer.

[0025] (15) The antenna device according to (14) above, wherein the second dielectric layer includes an adhesive layer or a polarizing layer.

[0026] (16) A display device comprising: a display panel; and the antenna device according to the above embodiment stacked on the display panel.

[0027] (17) The display device according to (16) above, wherein the display panel includes a display area and a non-display area, and the feed line and the decorative film are provided in the non-display area.

[0028] In an antenna device according to an embodiment of the present invention, for example, a slit may be formed in a decorative film of a display device, and a feed line may be provided below the decorative film so as to intersect the slit in a plan view. The coupling between the feed line and the slit can provide a slot antenna.

[0029] For example, the slot antenna can be implemented using a light shielding area or a frame area of ​​a display device, thereby providing improved radiation characteristics without reducing the image quality of the display device. In addition, the radiation shape and frequency can be easily controlled by adjusting the length and width of the slot.

[0030] In some embodiments, the patch antenna unit may be disposed around the slot antenna. Thus, a broadband antenna operating in multiple frequency bands, such as a dual-resonance antenna, may be implemented by the patch antenna unit and the slot antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 and Figure 2 1 and 2 are a schematic top plan view and a schematic cross-sectional view, respectively, showing an antenna device according to an exemplary embodiment.

[0032] Figure 3 is a schematic cross-sectional view illustrating an antenna device according to some exemplary embodiments.

[0033] Figure 4 is a schematic top plan view illustrating an antenna device according to some exemplary embodiments.

[0034] Figure 5 and Figure 6 is a schematic top plan view illustrating an antenna device according to some exemplary embodiments.

[0035] Figure 7 and Figure 8 are a schematic cross-sectional view and a schematic top plan view illustrating a display device according to an exemplary embodiment. DETAILED DESCRIPTION

[0036] According to an exemplary embodiment of the present invention, there is provided an antenna device that can provide a slot antenna using a decorative film.

[0037] According to an exemplary embodiment of the present invention, a display device including the antenna device and capable of providing a broadband communication function is also provided. Applications of the antenna device are not limited to the display device, and the antenna device can be applied to various objects or structures such as vehicles, home appliances, buildings, etc.

[0038] The antenna device may be, for example, a microstrip patch antenna fabricated in a transparent film form and may be applied to a communication device for mobile communications in a high frequency band or ultra-high frequency band corresponding to 3G, 4G, 5G or higher mobile communications.

[0039] 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 such 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.

[0040] Figure 1 and Figure 2 1 and 2 are a schematic top plan view and a schematic cross-sectional view, respectively, showing an antenna device according to an exemplary embodiment.

[0041] Reference Figure 1 and Figure 2 , the antenna device may include a feeding line 110 and a decoration film 130 provided at an upper layer of the feeding line 110 .

[0042] The feeding line 110 may be provided on the base dielectric layer 100. For example, the feeding line 110 may be formed on the top surface of the base dielectric layer 100.

[0043] The base dielectric layer 100 may include, for example, a transparent resin material. For example, the base dielectric layer 100 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 having 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 resins may be used alone or in combination of two or more. For example, the base dielectric layer 100 may include cycloolefin polymer (COP) for achieving sufficient flexibility.

[0044] In some embodiments, the base dielectric layer 100 may include an inorganic insulating material such as glass, silicon oxide, silicon nitride, silicon oxynitride, or the like.

[0045] In some embodiments, the dielectric constant of the base dielectric layer 100 may be adjusted to be within a range of about 1.5 to about 12. When the dielectric constant exceeds about 12, the driving frequency may be excessively reduced, thereby failing to achieve driving in a desired high frequency band or ultra-high frequency band.

[0046] For example, the feeding line 110 may be physically separated from the decoration film 130 with the first dielectric layer 120 interposed therebetween. Figure 1 As shown, the decoration film 130 may include a slit 135 therein. The slit 135 may intersect the feed line 110 substantially perpendicularly in a plan view.

[0047] The slit 135 may have a slit shape or an opening shape formed by partially removing the inner portion of the decoration film 130 .

[0048] like Figure 1 As shown, the feed line 110 may extend in a vertical direction (or length direction), and the slot 135 may extend in a horizontal direction (or width direction) above the feed line 110 .

[0049] In an exemplary embodiment, the decoration film 130 and the feeding line 110 may include a conductive material, and may include a metal or an alloy having low resistance to facilitate generation of an electric field through mutual coupling.

[0050] For example, the decorative film 130 and the feed line 110 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.

[0051] In one embodiment, the decoration film 130 and the feeding line 110 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.

[0052] For example, the decorative film 130 may be provided in a non-display region or a frame region of the display device. In this case, the decorative film 130 may be formed on a frame portion of the window sheet 160 (see FIG. Figure 7 ) and is attached to the first dielectric layer 120 so as to overlap with the feed line 110.

[0053] The first dielectric layer 120 may serve as a medium for generating an electric field between the slits 135 of the decoration film 130 and the feeding line 110. The first dielectric layer 120 may include, for example, an adhesive layer such as an optically clear adhesive (OCA), an optically clear resin (OCR), or the like.

[0054] In one implementation, the first dielectric layer 120 may include the transparent resin material, the inorganic insulating material, etc. mentioned in the base dielectric layer 100 .

[0055] In some embodiments, a ground layer 50 may be provided on the bottom surface of the base dielectric layer 100. The ground layer 50 may absorb or shield noise, for example, from the feed line 110. In addition, the ground layer 50 may facilitate the generation of an electric field through the feed line 110.

[0056] The ground layer 50 may include the metal or alloy described above. In one embodiment, an adhesive layer such as an OCA may be formed between the base dielectric layer 100 and the ground layer 50 .

[0057] In some embodiments, the ground layer 50 may be included as a separate element of the antenna device. In some embodiments, a conductive member of a display device to which the antenna device is applied may function as a ground layer.

[0058] 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.

[0059] In one embodiment, various structures including a conductive material disposed below the display panel may serve as the ground layer 50. 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 50.

[0060] A terminal portion of the feed line 110 may be electrically connected to a circuit board 170. The circuit board 170 may include, for example, a flexible printed circuit board (FPCB).

[0061] For example, an antenna driving integrated circuit (IC) chip (not shown) may be mounted on the circuit board 170. Therefore, power and signal transmission may be performed from the antenna driving IC chip to the feeding line 110 via the circuit board 170.

[0062] In one embodiment, the antenna driving IC chip may be mounted on a chip mounting board (eg, a rigid PCB), and the chip mounting board may be combined with the circuit board via a connector.

[0063] According to the exemplary embodiment described above, a slot antenna can be implemented using the decorative film 130 included in the non-display area or frame area of ​​a display device. Therefore, antenna radiation can be easily added without interfering with the image displayed in the display area of ​​the display device. For example, the feed line 110 may not extend outside the upper side of the decorative film 130 in a plan view and may not overlap with the display area of ​​the display device.

[0064] In addition, the resonant frequency band of the slot antenna can be easily controlled by adjusting the length of the slot 135. For example, the length of the slot 135 can be adjusted to substantially half the wavelength of the resonant frequency.

[0065] In one embodiment, the length of the slot 135 can be adjusted to a range of approximately 2 mm to 3 mm to enable mobile communications in the latest 5G frequency band. In this case, the resonant frequency generated by the slot antenna can be in the range of approximately 20 GHz to 30 GHz.

[0066] Figure 3 is a schematic cross-sectional view illustrating an antenna device according to some exemplary embodiments.

[0067] Reference Figure 3 , the feeding line 110 may be formed on the bottom surface of the base dielectric layer 100. In this case, the first dielectric layer 120 and the base dielectric layer 100 may be disposed between the decoration film 130 and the feeding line 110 so that the decoration film 130 and the feeding line 110 may be spaced apart from each other.

[0068] The second dielectric layer 90 may be formed on the bottom surface of the base dielectric layer 100. For example, the second dielectric layer 90 may include the adhesive layer described above and may cover the feeding line 110. The ground layer 50 may be provided on the bottom surface of the second dielectric layer 90.

[0069] according to Figure 3 In the illustrated embodiment, the first dielectric layer 120 and the base dielectric layer 100 may together serve as an electric field generating medium between the decorative film 130 and the feeding line 110 and may provide sufficient dielectric properties.

[0070] Figure 4 is a schematic top plan view illustrating an antenna device according to some exemplary embodiments.

[0071] Reference Figure 4 In addition to the above-mentioned slot antenna, the antenna device may further include a patch antenna unit 150 .

[0072] The patch antenna unit 150 may include a radiation pattern 152 and a transmission line 154. The radiation pattern 152 may have, for example, a polygonal flat plate shape, and the transmission line 154 may extend from a side of the radiation pattern 152. The transmission line 154 may be formed as a single member substantially integral with the radiation pattern 152.

[0073] The patch antenna unit 150 may further include a signal pad 156. The signal pad 156 may be connected to an end of the transmission line 154. In one embodiment, the signal pad 156 may be formed as a substantially integral member with the transmission line 154, and the end of the transmission line 154 may serve as the signal pad 156.

[0074] In some embodiments, ground pads 158 may be disposed around signal pads 156. For example, a pair of ground pads 158 may face each other with signal pad 156 interposed therebetween. Ground pads 158 may be electrically and physically separated from transmission line 154 around signal pad 156.

[0075] The patch antenna unit 150 may include the above-mentioned metal or alloy (e.g., APC alloy or CuCa alloy). The patch antenna unit 150 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.

[0076] In some embodiments, the patch antenna unit 150 may include a stacked structure of a transparent conductive oxide layer and a metal layer. For example, the patch antenna unit 150 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.

[0077] The radiation pattern 152 may be disposed in a display area of ​​the display device. In some embodiments, a portion of the transmission line 154 may also be disposed in the display area.

[0078] Therefore, the radiation pattern 152 and the transmission line 154 may be formed to include a mesh pattern structure to prevent a decrease in light transmittance in the display area.

[0079] The signal pad 156 and the ground pad 158 may be formed as a solid metal pattern to reduce and prevent feeding resistance and signal loss generated by the circuit board 170 .

[0080] In one embodiment, the radiation pattern 152 may be located in the display area. The transmission line 154 may be completely covered by the decoration film 130 in a plan view and may be disposed in the non-display area or the bezel area.

[0081] In this case, the radiation pattern 152 may include a mesh pattern structure, and the transmission line 154, the signal pad 156, and the ground pad 158 may be formed as a solid metal pattern. Therefore, the loss of power supply and signal transmission caused by the transmission line 154 can be suppressed.

[0082] The patch antenna unit 150 may be provided at the same level or on the same layer as the feed line 110. For example, the patch antenna unit 150 may be formed on the top or bottom surface of the base dielectric layer 100 together with the feed line 110. In this case, the circuit board 170 may be bonded to the pads 156 and 158 of the patch antenna unit 150 and the end of the feed line 110 together.

[0083] In some embodiments, the patch antenna element 150 may be disposed at a different level or layer than the feed line 110. For example, the patch antenna element 150 may be disposed on the top surface of the base dielectric layer 100, and the feed line 110 may be disposed on the bottom surface of the base dielectric layer 100.

[0084] As described above, the patch antenna unit 150 and the slot antenna having different radiation types or resonant frequencies can be included in a single antenna device to expand the radiation coverage. For example, the antenna device can be used as a dual resonant frequency antenna.

[0085] In one embodiment, patch antenna element 150 may function as a vertical radiating antenna, and feed line 110 may function as a monopole or dipole antenna.

[0086] Figure 5 and Figure 6 is a schematic top plan view illustrating an antenna device according to some exemplary embodiments.

[0087] Reference Figure 5 , the slot 135 included in the antenna device may extend in the vertical direction. In this case, the feed line 110 may include a portion extending in the horizontal direction so as to cross the slot 135 substantially perpendicularly.

[0088] In some embodiments, the feed line 110 may have a zigzag shape. For example, the feed line 110 may include a first portion 112 extending horizontally to intersect the slit 135 and a second portion 114 extending vertically from one end of the first portion 112 .

[0089] Reference Figure 6 The antenna device may include a plurality of slot antennas in an array form. Therefore, the gain characteristics generated by the antenna device can be enhanced.

[0090] For example, the antenna device may include a first slot 135a extending in the horizontal direction and a second slot 135b extending in the horizontal direction as shown in FIG. Figure 5 The second slit 135b extends in the vertical direction.

[0091] The first feed line 110a extending in the vertical direction may be disposed below the first slot 135a to define a first slot antenna. Figure 5 As described above, the second feeding line 110 b including the first portion 112 extending in the horizontal direction may be disposed below the second slot 135 b to define a second slot antenna.

[0092] As described above, the first slot antenna and the second slot antenna extending in different directions can be arranged together to increase the radiation coverage and improve the gain characteristics. In addition, polarization characteristics in different directions (for example, vertical polarization and horizontal polarization) can be achieved, thereby expanding the beam coverage.

[0093] The decoration film 130 may be appropriately modified according to the logo or aesthetic aspects. Figure 5 and Figure 6 The shape of the slot antenna shown. For example, the shape of the slot 135 may be formed to have a pattern shape such as letters or logos.

[0094] Figure 7 and Figure 81 is a schematic cross-sectional view and a schematic top plan view showing a display device according to an exemplary embodiment. For example, Figure 8 The appearance of a window including a display device is shown.

[0095] Reference Figure 7 , the display device 200 may include a display panel 230 and the above-mentioned antenna device stacked on the display panel 230.

[0096] 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.

[0097] The decoration film 130 including the slit 135 of the antenna device may be formed in the non-display region or the bezel region of the window sheet 160 and may be attached on the first dielectric layer 120 including, for example, an adhesive layer.

[0098] 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 user may be prevented from visually recognizing the sensing electrodes included in the touch sensor layer 240. Furthermore, the polarization layer 250 may be included as the second dielectric layer 90.

[0099] Reference Figure 8 , the display device 200 may include a display area 210 and a peripheral area 220. For example, the peripheral area 220 may be positioned on two lateral portions and / or two end portions of the display area 210.

[0100] In some embodiments, the antenna device can be inserted into the peripheral area 220 of the display device 200 in the form of a patch or film. In some embodiments, the radiation pattern 152 of the patch antenna unit 150 in the antenna device can be set to at least partially correspond to the display area 210 of the display device 200.

[0101] The peripheral region 220 may correspond to, for example, a light shielding portion or a frame portion of the image display device. Furthermore, a driver circuit, such as a driver integrated circuit (IC) chip for the display device 200 and / or an antenna, may be disposed in the peripheral region 220. The decorative film 130 may be included in the peripheral region 220, and a slot antenna may also be disposed in the peripheral region 220.

[0102] Therefore, the peripheral area 220 can be utilized to prevent visual recognition of the antenna electrode, and antenna radiation characteristics in the display device 200 can be expanded.

[0103] The circuit board 170 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. An antenna device, characterized in that: It includes: a base dielectric layer; a feed line disposed on the base dielectric layer; a decorative film disposed on the base dielectric layer and spaced apart from the feed line, the decorative film including a slit intersecting the feed line in a plan view; as well as a patch antenna unit provided on the base dielectric layer, the patch antenna unit being provided on the same layer as the feed line and spaced apart from the feed line, wherein the patch antenna unit does not overlap with the slot in a plan view, and The patch antenna unit includes a radiation pattern that does not overlap with the decoration film in a plan view, and a transmission line that extends from the radiation pattern and at least partially overlaps with the decoration film in a plan view.

2. The antenna device according to claim 1, wherein It also includes a first dielectric layer formed on the base dielectric layer for separating the feeding line and the decoration film from each other.

3. The antenna device according to claim 2, wherein: The first dielectric layer includes an adhesive layer.

4. The antenna device according to claim 3, wherein: It also includes a window sheet on which the decoration film is formed, wherein the window sheet is attached to the first dielectric layer such that the decoration film overlaps the feeding line.

5. The antenna device according to claim 1, wherein The slot extends in the horizontal direction and the power supply line extends in the vertical direction.

6. The antenna device according to claim 1, wherein The slot extends in a vertical direction, and the feed line includes a portion extending in a horizontal direction.

7. The antenna device according to claim 6, wherein: The feed line includes a first portion extending in a horizontal direction and a second portion extending from the first portion in a vertical direction.

8. The antenna device according to claim 1, wherein The slits include a first slit extending in a horizontal direction and a second slit extending in a vertical direction.

9. The antenna device according to claim 8, wherein The feed line includes a first feed line extending in a vertical direction and crossing the first slot, and a second feed line including a portion extending in a horizontal direction so as to cross the second slot.

10. The antenna device according to claim 1, wherein The decoration film includes an upper side and a lower side, the radiation pattern is located outside the upper side of the decoration film in a plan view, and the feed line does not extend beyond the upper side of the decoration film in a plan view.

11. The antenna device according to claim 1, wherein The feed line is provided on a top surface or a bottom surface of the base dielectric layer.

12. The antenna device according to claim 11, wherein: It also includes a second dielectric layer disposed on the bottom surface of the base dielectric layer.

13. The antenna device according to claim 12, wherein: The second dielectric layer includes an adhesive layer or a polarizing layer.

14. A display device, characterized in that: It includes: Display panel; as well as The antenna device according to claim 1 is stacked on the display panel.

15. The display device according to claim 14, wherein: The display panel includes a display area and a non-display area, and the feed line and the decoration film are disposed in the non-display area.

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