CN113495648A

CN113495648A - Antenna insertion type electrode structure and image display device

Info

Publication number: CN113495648A
Application number: CN202110361072.9A
Authority: CN
Inventors: 孟昌俊; 赵银显
Original assignee: Dongwoo Fine Chem Co Ltd
Current assignee: Dongwoo Fine Chem Co Ltd
Priority date: 2020-04-06
Filing date: 2021-04-02
Publication date: 2021-10-12
Also published as: KR20210123769A; CN215117477U; WO2021206386A1

Abstract

According to embodiments of the present invention, an antenna insertion electrode structure and an image display device are provided. This antenna plug-in electrode structure includes: a substrate layer, first and second sensing electrodes disposed at different levels with the substrate layer interposed therebetween, and an antenna pattern disposed at the same level as the second sensing electrode. The antenna pattern includes a radiation pattern disposed between adjacent ones of the second sensing electrodes.

Description

Antenna insertion type electrode structure and image display device

Cross Reference to Related Applications

The present application claims priority from korean patent application No. 10-2020-0041375 filed in Korean Intellectual Property Office (KIPO) at 6.4.2020, the entire disclosure of which is incorporated herein by reference.

Technical Field

The invention relates to an antenna insertion type electrode structure and a display device. More particularly, the present invention relates to an antenna insertion electrode structure including an antenna pattern and a sensing electrode, and an image display device including the same.

Background

Recently, electronic devices capable of inputting user commands by selecting instructions displayed on an image display device by a human hand or an object are implemented in various shapes by a combination of the image display device and a touch sensor, such as a smart phone, a tablet computer, and the like.

Further, the image display device is combined with a communication device such as a smartphone. For example, an antenna for realizing high-frequency or ultra-high-frequency communication in a 3G to 5G or higher frequency band may be applied to an image display device.

As described above, when the touch sensor and the antenna are applied to one image display device, radiation patterns of the touch sensing electrode and the antenna may be distributed together. Therefore, the touch sensing sensitivity may be reduced due to the radiation pattern of the antenna. In addition, the radiation characteristics of the antenna may be disturbed by the touch sensing electrode.

Accordingly, there may be a need for a configuration for effectively arranging electrodes while maintaining mutual independence of touch sensing and antenna radiation characteristics.

For example, as disclosed in korean laid-open patent application No. 2014-0092366, a touch screen panel in which a touch sensor is combined with various image display devices has been recently developed. Korean patent publication No. 2013-0095451 discloses an antenna integrated into a display panel. However, there is no teaching of an image display device capable of effectively arranging an antenna and a touch sensor.

Disclosure of Invention

According to an aspect of the present invention, there is provided an antenna insertion electrode structure having improved radiation characteristics and sensing reliability.

According to an aspect of the present invention, there is provided an image display device including an antenna insertion electrode structure having improved radiation characteristics and sensing reliability.

The above aspects of the invention will be achieved by one or more of the following features or configurations:

(1) an antenna insertion electrode structure, comprising: a substrate layer; a first sensing electrode and a second sensing electrode disposed at different levels with a substrate layer interposed therebetween; and an antenna pattern disposed at the same level as the second sensing electrodes, the antenna pattern including a radiation pattern disposed between adjacent ones of the second sensing electrodes.

(2) The antenna insertion electrode structure according to the above (1), wherein the first sensing electrode extends in a first direction parallel to a top surface of the substrate layer, and the second sensing electrode extends in a second direction parallel to the top surface of the substrate layer and perpendicular to the first direction.

(3) The antenna insertion electrode structure according to the above (2), wherein a center line of the radiation pattern overlaps with any one of the second sensing electrodes in the second direction.

(4) The antenna insertion electrode structure according to the above (3), wherein a length of the second sensing electrode overlapping with the center line of the radiation pattern in the second direction is shorter than a length of the adjacent second sensing electrode.

(5) The antenna insertion electrode structure according to the above (1), further comprising a dummy pattern disposed around the second sensing electrode and the radiation pattern on the substrate layer.

(6) The antenna interposer electrode structure according to the above (5), wherein the dummy pattern includes an antenna dummy pattern disposed around the radiation pattern, and a shape of the antenna dummy pattern is different from a shape of a dummy pattern located around the second sensing electrode in the dummy pattern.

(7) The antenna insertion electrode structure according to the above (1), wherein the first sensing electrode overlapping with the radiation pattern in a thickness direction of the first sensing electrode includes an opening formed at a position where the radiation pattern is projected in a plan view.

(8) The antenna insertion electrode structure according to the above (1), wherein the first sensing electrode includes a slit formed at a position overlapping with the second sensing electrode in a plan view.

(9) The antenna insertion electrode structure according to the above (1), wherein a line width of the first sensing electrode is larger than a line width of the second sensing electrode.

(10) The antenna insertion electrode structure according to the above (1), further comprising a first trace connected to the first sensing electrode and a second trace connected to the second sensing electrode.

(11) The antenna insertion electrode structure according to the above (10), wherein the first sensing electrode and the second sensing electrode comprise a transparent conductive oxide.

(12) The antenna insertion electrode structure according to the above (11), wherein the second trace includes a transparent conductive oxide pattern and a metal pattern stacked in this order from the substrate layer.

(13) The antenna interposer electrode structure according to the above (12), wherein the antenna pattern comprises a metal or an alloy identical to a metal or an alloy contained in the metal pattern of the second trace.

(14) The antenna insertion electrode structure according to the above (10), wherein the antenna pattern further includes a transmission line connected to an end of the radiation pattern and a signal pad connected to an end of the transmission line, and the signal pad is disposed in an outer peripheral region of the substrate layer and does not overlap the second trace.

(15) An image display device, comprising: a display panel; and an antenna insertion electrode structure according to the above embodiment stacked on the display panel.

(16) The image display device according to the above (15), further comprising a polarizing layer provided between the display panel and the antenna insertion electrode structure.

In the antenna insertion electrode structure according to the exemplary embodiment of the present invention, the antenna pattern may be disposed on the same layer as any one of the first and second sensing electrodes. Accordingly, mutual independence can be enhanced using the thin layer electrode stack structure while suppressing mutual interference between the touch sensing driving and the antenna radiation driving in the touch sensor.

In some embodiments, the line width of the second sensing electrode disposed with the antenna pattern may be relatively reduced. Accordingly, a space for inserting the antenna pattern may be sufficiently realized to improve radiation independence, and a line width of the first sensing electrode may be relatively increased so that capacitance for touch sensing may be sufficiently generated.

In some embodiments, a dummy pattern may be formed around the antenna pattern and the second sensing electrode, and an opening covering the antenna pattern may be formed in the first sensing electrode. Therefore, it is possible to effectively prevent mutual interference of antenna radiation and touch sensing while reducing visual recognition of the electrodes due to the antenna pattern.

Drawings

Fig. 1 to 4 are schematic cross-sectional views illustrating an antenna insertion electrode structure according to an exemplary embodiment.

Fig. 5 and 6 are schematic top plan views illustrating arrangements of sensing electrodes of the antenna insertion electrode structure according to an exemplary embodiment.

Fig. 7 and 8 are schematic top plan views illustrating an antenna insertion electrode structure according to an exemplary embodiment.

Fig. 9 is a schematic top plan view illustrating an antenna insertion electrode structure according to some example embodiments.

Fig. 10 and 11 are a schematic cross-sectional view and a schematic top plan view, respectively, illustrating an image display device including an antenna insertion electrode structure according to an exemplary embodiment.

Detailed Description

According to an exemplary embodiment of the present invention, there is provided an antenna interposer electrode structure including an antenna pattern and a sensing electrode. Further, an image display device including the antenna insertion electrode structure is provided.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, those skilled in the art will appreciate that the embodiments described with reference to the drawings are provided for further understanding of the spirit of the invention and are not meant to limit the claimed subject matter disclosed in the detailed description and the appended claims.

In the drawings, two directions parallel to the top surface of the substrate layer 100 and perpendicular to each other are referred to as a first direction and a second direction. For example, the first direction may correspond to a width direction of the antenna insertion electrode structure or the image display device. The second direction may correspond to a length direction of the antenna insertion electrode structure or the image display device.

The terms "first," "second," "top," and "bottom" as used herein do not denote absolute positions, but rather are used to relatively distinguish different positions and elements.

Referring to fig. 1, the antenna insertion electrode structure may include a substrate layer 100, a second sensing electrode 130 and an antenna pattern 150 formed on an upper surface of the substrate layer 100, and a first sensing electrode 110 formed on a lower surface of the substrate layer 100.

The substrate layer 100 may include a support layer or a thin film type substrate for forming the

sensing electrodes

110 and 130 and the antenna pattern 150. For example, the substrate layer 100 may include a thin film material generally used for a touch sensor without particular limitation, and may include, for example, glass, polymer, and/or inorganic insulating material. Examples of the polymer may include Cyclic Olefin Polymer (COP), polyethylene terephthalate (PET), Polyacrylate (PAR), Polyetherimide (PEI), polyethylene naphthalate (PEN), polyphenylene sulfide (PPS), polyallylate, Polyimide (PI), Cellulose Acetate Propionate (CAP), Polyethersulfone (PES), cellulose Triacetate (TAC), Polycarbonate (PC), Cyclic Olefin Copolymer (COC), Polymethylmethacrylate (PMMA), and the like. Examples of the inorganic insulating material may include silicon oxide, silicon nitride, silicon oxynitride, and metal oxide.

The substrate layer 100 may serve as a dielectric layer of the antenna pattern 150. Preferably, the dielectric constant of the substrate layer 100 may be adjusted to be in the range of about 1.5 to 12. When the dielectric constant exceeds about 12, the driving frequency may be excessively lowered, and thus an antenna driven at a desired high frequency band or ultra high frequency band may not be realized.

The first and

second sensing electrodes

110 and 130 may be vertically spaced apart from each other with the substrate layer 100 interposed therebetween, and may be located at different layers or at different levels. In an exemplary embodiment, touch sensing may be achieved by mutual capacitance generated by the first and

second sensing electrodes

110 and 130.

The first sensing electrode 110 may be disposed on a bottom surface of the substrate layer 100, and the second sensing electrode 130 may be disposed on a top surface of the substrate layer 100.

The

sensing electrodes

110 and 130 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), and the like.

In some embodiments, the

sensing electrodes

110 and 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), molybdenum (Mo), tin (Sn), calcium (Ca), or an alloy containing at least one metal thereof (e.g., silver-palladium-copper (APC)) or copper (Cu) or a copper alloy (e.g., copper-calcium (CuCa)). They may be used alone or in combination.

In some embodiments, the

sensing electrodes

110 and 130 may have a multi-layered structure including a metal or alloy layer and a transparent metal oxide layer. For example, the

sensing electrodes

110 and 130 may include a double-layer structure of a transparent conductive oxide layer-metal layer or a triple-layer structure of a first transparent conductive oxide layer-metal layer-second transparent conductive oxide layer. In this case, flexibility can be improved by the metal layer, and resistance can also be reduced by the metal layer to increase the signal transmission speed. The corrosion resistance and transparency can be improved by the transparent conductive oxide layer.

In a preferred embodiment, the

sensing electrodes

110 and 130 may be formed of a transparent conductive oxide layer to improve light transmittance.

In some embodiments, sensing

electrodes

110 and 130 may have a mesh structure comprising, for example, the metals or alloys described above.

The antenna pattern 150 may be located at the same layer or at the same level as the first sensing electrode 110 or the second sensing electrode 130. In an exemplary embodiment, the antenna pattern 150 may be disposed at the top surface of the substrate layer 100 together with the second sensing electrode 130 corresponding to the upper sensing electrode.

For example, the second sensing electrode 130 may be closer to a user touch surface or a display surface of the image display device. In this case, the antenna pattern 150 may also abut the touch surface or the display surface, thereby easily achieving radiation characteristics in a desired frequency band. Further, the radiation characteristic of the antenna pattern 150 may be implemented to be relatively less susceptible to shielding by the electrode structure.

The antenna pattern 150 may be formed to provide high or ultra high frequency communications (e.g., corresponding to 3G, 4G, 5G, or higher communications). The elements and structure of the antenna pattern 150 will be described in more detail later with reference to fig. 7.

The antenna pattern 150 may include the above-described metal or alloy (e.g., APC or CuCa) in consideration of low resistance or pattern formation with a fine line width.

The antenna pattern 150 may include the transparent conductive oxide described above. The antenna pattern 150 may include a multi-layer structure of a transparent conductive oxide layer and a metal layer (e.g., a transparent conductive oxide layer-metal layer structure or a transparent conductive oxide layer-metal layer-transparent conductive oxide layer structure).

In one embodiment, the antenna pattern 150 may include a mesh structure.

The first trace 120 may be connected to each of the first sensing electrodes 110. The first wire trace 120 may be disposed on a bottom surface of the substrate layer 100 together with the first sensing electrode 110.

In some embodiments, the first trace 120 may include a first transparent conductive oxide pattern 115 and a first metal pattern 117. The first transparent conductive oxide pattern 115 and the first metal pattern 117 may be sequentially stacked from the bottom surface of the substrate layer 100.

For example, the first transparent conductive oxide pattern 115 may include the same material as the first sensing electrode 110, and may be patterned together with the first sensing electrode 110 by substantially the same etching process.

The first metal pattern 117 may be stacked on the first transparent conductive oxide pattern 115 to reduce a signal transmission resistance through the first trace 120. The first metal pattern 117 may include the above-described metal or alloy.

The second trace 140 may be connected to each of the second sensing electrodes 130. The second wire trace 140 may be disposed on the top surface of the substrate layer 100 together with the second sensing electrode 130.

In some embodiments, the second trace 140 may include a second transparent conductive oxide pattern 135 and a second metal pattern 137. The second transparent conductive oxide pattern 135 and the second metal pattern 137 may be sequentially stacked from the top surface of the substrate layer 100.

For example, the second transparent conductive oxide pattern 135 may include the same material as the second sensing electrode 130, and may be patterned together with the second sensing electrode 130 by substantially the same etching process.

The second metal pattern 137 may be stacked on the second transparent conductive oxide pattern 135 to reduce a signal transmission resistance through the second trace 140. The second metal pattern 137 may include the above-described metal or alloy.

In some embodiments, the antenna pattern 150 may include substantially the same metal or alloy as the second metal pattern 137. For example, when the second metal pattern 137 is formed, the antenna pattern 150 may also be formed through substantially the same etching process.

Referring to fig. 2, the antenna pattern 150 may include a multi-layer structure of the transparent conductive oxide layer 152 and the metal layer 154 as described above. The transparent conductive oxide layer 152 and the metal layer 154 may be sequentially stacked from the top surface of the substrate layer 100.

In some embodiments, the transparent conductive oxide layer 152 of the antenna pattern 150 may include substantially the same material as the second sensing electrode 130 and the second transparent conductive oxide pattern 135 of the second trace 140, and may be formed through substantially the same etching process.

The metal layer 154 of the antenna pattern 150 may include substantially the same metal or alloy as the second metal pattern 137 of the second trace 140, and may be formed through substantially the same etching process.

The antenna pattern 150 may include a multi-layer structure of the transparent conductive oxide layer 152 and the metal layer 154 as described above, so that sufficient radiation characteristics may be obtained by the metal layer 154 having low resistance and light transmittance may also be improved. In addition, the transparent conductive oxide layer 152 may be simultaneously included so that the antenna pattern 150 may be prevented from being visually recognized as compared to the second sensing electrode 130.

Referring to fig. 3, the second sensing electrode 130 and the second wire trace 140 may be disposed on a bottom surface of the substrate layer 100, and the first sensing electrode 110 and the first wire trace 120 may be disposed on a top surface of the substrate layer 100. The antenna pattern 150 may be disposed on the bottom surface of the substrate layer 100 together with the second sensing electrode 130.

Referring to fig. 4, the first and

second sensing electrodes

110 and 130 may be formed on different substrate layers.

For example, the first sensing electrode 110 and the first wire trace 120 may be disposed on the top surface of the first substrate layer 100a, and the second sensing electrode 130 and the second wire trace 140 may be disposed on the top surface of the substrate layer 100 b.

The first and

second substrate layers

100a and 100b, on which the first and

second sensing electrodes

110 and 130 may be formed, respectively, may be adhered to each other using the adhesive layer 50. In this case, the first sensing electrode 110 may be substantially embedded in the adhesive layer 50.

As shown in fig. 4, the antenna pattern 150 may be disposed on the top surface of the second substrate layer 100 b. In one embodiment, the antenna pattern 150 may be disposed on the top surface of the first substrate layer 100a together with the first sensing electrode 110.

According to the above-described exemplary embodiment, the antenna pattern 150 may be disposed at the same level as any one of the first and

second sensing electrodes

110 and 130. Therefore, mutual independence can be enhanced while suppressing mutual interference between the touch sensing drive and the antenna radiation drive in the touch sensor. In addition, the antenna pattern 150 may be combined at the same level as the sensing electrode of the touch sensor, so that a thinner antenna insertion electrode structure may be obtained without allocating an additional antenna space.

Referring to fig. 5, the first sensing electrode 110 may extend in a first direction, and a plurality of the first sensing electrodes 110 may be arranged along a second direction. The second sensing electrode 130 may extend along the second direction at a level above the first sensing electrode 110. The plurality of second sensing electrodes 130 may be arranged along the first direction.

In an exemplary embodiment, a line width (e.g., a width in the second direction) of the first sensing electrode 110 may be greater than a line width (e.g., a width in the first direction) of the second sensing electrode 130. As described above, the antenna pattern 150 may be provided together with the second sensing electrode 130.

In this case, the line width of the second sensing electrode 130 may be reduced, so that a space for inserting the antenna pattern 150 may be sufficiently obtained. In addition, the line width of the first sensing electrode 110 may be relatively increased to sufficiently generate capacitance for touch sensing.

In some embodiments, one first trace 120 may be connected to each first sensing electrode 110, and a plurality of second sensing electrodes 130 may be coupled through the second trace 140 to form substantially one channel. For example, two second sensing electrodes 130 may be coupled by a second trace 140.

Accordingly, the matching degree of the scan/drive signal with the first sensing electrode 110 having a relatively large line width may be enhanced by the coupling of the second sensing electrode 130.

Referring to fig. 6, at least one of the first and

second sensing electrodes

110 and 130 may have a zigzag line shape or a wavy line shape. For example, the second sensing electrode 130 having a relatively small line width may have a zigzag line shape or a wavy line shape.

The shape of the second sensing electrode 130 may be appropriately changed in consideration of the insertion space of the antenna pattern 150.

Referring to fig. 7, the antenna pattern 150 may include a radiation pattern 160 and a transmission line 162. The radiation pattern 160 may have a polygonal shape such as a diamond shape or a diamond shape. The transmission line 162 may protrude from one end of the radiation pattern 160.

In some embodiments, the signal pad 164 may be connected to an end of the transmission line 162. The signal pad 164 may be a substantially unitary member integrally connected to the transmission line 162.

A ground pad 166 may be disposed around the signal pad 164. For example, a pair of ground pads 166 may be disposed opposite each other with the signal pad 164 interposed therebetween. The ground pad 166 may be electrically and physically separated from the transmission line 162 and the signal pad 164.

As described above, the antenna pattern 150 may be disposed on the top surface of the substrate layer 100 together with the second sensing electrode 130. In an exemplary embodiment, the radiation pattern 160 of the antenna pattern 150 may be disposed between adjacent second sensing electrodes 130.

In some embodiments, the antenna pattern 150 may be included such that the second sensing electrode 130 overlapping the radiation pattern 160 in the second direction may become shorter than other adjacent second sensing electrodes 130. For example, the length of one second sensing electrode 130 (e.g., the cut second electrode 130) may be reduced by a length corresponding to the length of the radiation pattern 160 inserted in the active or sensing region where the

sensing electrodes

110 and 130 are disposed.

Therefore, the antenna radiation driving characteristic can be realized while reducing the decrease in the sensing sensitivity caused by the insertion of the antenna pattern 150 as much as possible.

In some embodiments, a centerline of the radiation pattern 160 (e.g., a virtual centerline extending from the transmission line 162) may overlap the cut second sensing electrode 130 in the second direction.

Accordingly, the number of the second sensing electrodes 130 cut according to the insertion of the radiation pattern 160 may be reduced, and antenna radiation interference caused by an electric field generated by the second sensing electrodes 130 may be substantially suppressed or avoided.

In some embodiments, the dummy pattern 170 may be distributed on the top surface of the substrate layer 100 together with the second sensing electrode 130 and the antenna pattern 150. The dummy pattern 170 may be arranged around the second sensing electrode 130 and the antenna pattern 150, and may be electrically and physically separated from the second sensing electrode 130 and the antenna pattern 150.

Each dummy pattern 170 may have an island shape or a brick shape. The dummy pattern 170 may include substantially the same material as the second sensing electrode 130, and may include, for example, a transparent conductive oxide such as ITO or IZO.

Some dummy patterns 170 may be used as antenna dummy patterns 175 arranged around the antenna pattern 150. The antenna dummy pattern 175 may be arranged along a boundary of the radiation pattern 160 and may have a different shape from the dummy pattern 170.

The dummy pattern 170 may be disposed around the second sensing electrode 130 and the antenna pattern 150, so that a local distribution deviation of the conductive pattern on the top surface of the substrate layer 100 may be reduced. Accordingly, optical uniformity on the substrate layer 100 may be improved, so that visual recognition of the electrodes may be prevented.

Referring to fig. 8, the first sensing electrode 110 overlapping the antenna pattern 150 in a thickness direction of the first sensing electrode 110 may include an opening 112 therein. The opening 112 may be formed to be covered with the antenna pattern 150 in a plan view.

A portion of the first sensing electrode 110, which may overlap the antenna pattern 150, may be removed, so that the radiation interference of the first sensing electrode 110 to the antenna pattern 150 may be suppressed.

In some embodiments, the first sensing electrode 110 may include a slit 114 formed at a position overlapping the second sensing electrode 130 in a plan view.

For example, the slits 114 may be repeatedly formed along the second direction to form a row of slits. In addition, a plurality of rows of slits may be arranged overlapping the second sensing electrode 130 along the first direction.

The slit 114 and the opening 112 may be formed at positions overlapping the second sensing electrode 130 and the antenna pattern 150, respectively, to prevent a decrease in light transmittance and an increase in reflectivity due to the overlapping of the conductive layers in the vertical direction. Therefore, it is possible to prevent the electrode from being visible while improving the overall light transmittance of the antenna insertion electrode structure.

Referring to fig. 9, the radiation pattern 160 may include a mesh structure. For example, if the radiation pattern 160 includes a metal layer, a mesh structure may be employed to suppress a reduction in light transmittance due to the insertion of the antenna pattern 150.

In some embodiments, the transmission line 162 may also include a mesh structure and may be integrally connected to the radiation pattern 160.

The dummy mesh pattern 177 may be formed around the radiation pattern 160. The distribution uniformity of the conductive lines around the radiation pattern 160 may be improved by the dummy mesh pattern 177 to suppress the visibility of the radiation pattern 160.

For example, the dummy mesh pattern 177 may be disposed around the radiation pattern 160, and the dummy patterns 170 described above may be distributed outside the dummy mesh pattern 177.

In some embodiments, the signal pad 164 and the ground pattern 166 may have a solid metal pattern structure to reduce the feed resistance and improve the noise shielding efficiency. For example, the signal pad 164 and the ground pad 166 may be disposed in an outer peripheral area of the substrate layer 100 where the second sensing electrode 130 may not be disposed.

Referring to fig. 10, the image display device may include a display panel 360 and the antenna insertion electrode structure 200 according to the above-described exemplary embodiment stacked on the display panel 360.

The display panel 360 may include a display structure and an encapsulation layer 350 disposed on the panel substrate 300. The display structure may include a pixel electrode 310, a pixel defining layer 320, a display layer 330, an opposite electrode 340, and the like.

A pixel circuit including a thin film transistor TFT may be formed on the panel substrate 300, and an insulating layer may be formed to cover the pixel circuit. The pixel electrode 310 may be electrically connected to, for example, a drain electrode of the TFT on the insulating layer.

The pixel defining layer 320 may be formed on the insulating layer to expose the pixel electrode 310 to define a pixel region. The display layer 330 may be formed on the pixel electrode 310, and the display layer 330 may include, for example, a liquid crystal layer or an organic light emitting layer.

The opposite electrode 340 may be disposed on the pixel defining layer 320 and the display layer 330. The opposite electrode 340 may be used as, for example, a common electrode or a cathode of the image display device. An encapsulation layer 350 for protecting the display panel 360 may be stacked on the opposite electrode 340.

In some embodiments, the display panel 360 and the antenna insertion electrode structure 200 may be bonded by the adhesive layer 260.

In some embodiments, antenna interposer electrode structure 200 may be stacked or formed directly on encapsulation layer 350. In this case, the adhesive layer 260 may be omitted.

The polarizing layer 210 and the window substrate 230 may be sequentially stacked on the antenna insertion electrode structure 200.

The polarizing layer 210 may include a coating type polarizer or a polarizing plate. The coated polarizer may include a liquid crystal coating, which may include a crosslinkable liquid crystal compound and a dichroic dye. In this case, the polarizing layer 210 may include an alignment layer for providing alignment of the liquid crystal coating.

For example, the polarizing plate may include a polyvinyl alcohol-based polarizer and a protective film attached to at least one surface of the polyvinyl alcohol-based polarizer.

The polarizing layer 210 may be directly attached to the surface of the window substrate 230, or may be attached via the first adhesive layer 220. The polarizing layer 210 may be adhered to the antenna interposer electrode structure 200 via a second adhesive layer 225.

The window substrate 230 can include, for example, a hard coat film or a glass substrate (e.g., ultra-thin glass: UTG). In one embodiment, the light blocking pattern 235 may be formed on a peripheral portion of the surface of the window substrate 230. The light blocking pattern 235 may include a color printing pattern, and may have a single layer or a multi-layer structure. A bezel portion or a non-display area of the image display device may be defined by the light blocking pattern 235.

As shown in fig. 10, the window substrate 230, the polarizing layer 210, and the antenna insertion electrode structure 200 may be positioned in order from the viewer side. In this case, the

sensing electrodes

110 and 130 and the antenna pattern 150 may be disposed under the polarizing layer 210, so that the electrode pattern may be effectively prevented from being recognized by a viewer.

In one embodiment, the window substrate 230, the antenna insertion electrode structure 200, and the polarizing layer 210 may be arranged in order from the viewer side. In this case, the antenna pattern 150 and the

sensing electrodes

110 and 130 may be closer to the display surface or the touch surface to enhance radiation gain and sensitivity.

The window substrate 230, the polarizing layer 210, and the antenna interposer electrode structure 200 as described above may be integrally combined to define a window stack structure 250.

Referring to fig. 11, a substrate layer 100 of an image display device or an antenna insertion electrode structure 200 may include a display area DA and a peripheral area PA. The display area DA may correspond to an active area where the

sensing electrodes

110 and 130 of the antenna insertion electrode structure 200 are disposed, and may substantially input/recognize touch sensing.

The

sensing electrodes

110 and 130 and the antenna pattern 150 may be disposed on the display area DA.

Traces

120 and 140 may be disposed on the peripheral region PA. The signal pad 164 and the ground pad 166 of the antenna pattern 150 may also be disposed on the outer circumferential area PA.

In some embodiments, the

traces

120 and 140 may extend to one end (e.g., one end in a length direction) of the image display device or the antenna insertion electrode structure 200. The ends of

traces

120 and 140 may be electrically connected to a touch sensor driver Integrated Circuit (IC) chip 420.

For example, a first flexible printed circuit board 410 may be adhered to ends of the

traces

120 and 140, and a touch sensor driving integrated circuit chip 420 may be mounted on the first flexible printed circuit board 410.

The touch sensor driving integrated circuit chip 420 may be directly surface-mounted on the first flexible printed circuit board 410. Alternatively, a rigid printed circuit board may be additionally disposed between the first flexible printed circuit board 410 and the touch sensor driving integrated circuit chip 420.

In some embodiments, an antenna driving IC chip 440 for applying power and a driving signal to the antenna pattern 150 may be disposed adjacent to an end opposite to the one end of the substrate layer 100. For example, the radiation pattern of the antenna pattern 150 may be disposed in the end region a1 and/or the lateral region a2 adjacent to the other end.

The signal pads 164 and the ground pads 166 of the antenna pattern 150 may be disposed in portions of the outer circumferential region PA adjacent to the end region a1 and/or the lateral region a 2. In some embodiments, the signal pad 164 and the ground pad 166 may be formed by patterning a portion of a protection line (e.g., a touch sensor ground line) disposed on the outer peripheral area PA.

For example, a second flexible printed circuit board 430 adhered to the signal pad 164 included in the antenna pattern 150 may be disposed on the other end portion, and the antenna driving IC chip 440 may be mounted on the second flexible printed circuit board 430.

The antenna driving IC chip 440 may be directly surface-mounted on the second flexible printed circuit board 430. Alternatively, a rigid printed circuit board may be additionally disposed between the second flexible printed circuit board 430 and the antenna driving IC chip 440

As described above, the circuit connection may be designed to improve mutual independence of touch sensing and antenna radiation by dividing the area of the image display device or the substrate layer 100.

Claims

1. An antenna insertion electrode structure, comprising:

a substrate layer;

a first sensing electrode and a second sensing electrode disposed at different levels with the substrate layer interposed therebetween; and

an antenna pattern disposed at the same level as the second sensing electrodes, the antenna pattern including a radiation pattern disposed between adjacent ones of the second sensing electrodes.

2. The antenna interposer electrode structure of claim 1, wherein the first sensing electrode extends in a first direction parallel to a top surface of the substrate layer and the second sensing electrode extends in a second direction parallel to the top surface of the substrate layer and perpendicular to the first direction.

3. The antenna interposer electrode structure of claim 2, wherein a centerline of the radiation pattern overlaps with any of the second sensing electrodes in the second direction.

4. The antenna interposer electrode structure of claim 3, wherein a length of the second sense electrode that overlaps the centerline of the radiation pattern in the second direction is shorter than a length of an adjacent second sense electrode.

5. The antenna interposer electrode structure of claim 1, further comprising a dummy pattern disposed on the substrate layer around the second sensing electrode and the radiation pattern.

6. The antenna interposer electrode structure of claim 5, wherein the dummy pattern comprises an antenna dummy pattern disposed around the radiation pattern, and wherein a shape of the antenna dummy pattern is different from a shape of a dummy pattern of the dummy pattern located around the second sensing electrode.

7. The antenna insertion electrode structure according to claim 1, wherein the first sensing electrode that overlaps with the radiation pattern in a thickness direction of the first sensing electrode includes an opening formed at a position where the radiation pattern is projected in a plan view.

8. The antenna insertion electrode structure of claim 1, wherein the first sensing electrode comprises a slit formed at a position overlapping the second sensing electrode in a plan view.

9. The antenna insertion electrode structure of claim 1, wherein a line width of the first sensing electrode is greater than a line width of the second sensing electrode.

10. The antenna interposer electrode structure of claim 1, further comprising a first trace connected to the first sensing electrode and a second trace connected to the second sensing electrode.

11. The antenna insertion electrode structure of claim 10, wherein the first and second sensing electrodes comprise a transparent conductive oxide.

12. The antenna interposer electrode structure of claim 11, wherein the second trace comprises a transparent conductive oxide pattern and a metal pattern stacked sequentially from the substrate layer.

13. The antenna interposer electrode structure of claim 12, wherein the antenna pattern comprises a metal or alloy that is the same as a metal or alloy contained in the metal pattern of the second trace.

14. The antenna interposer electrode structure of claim 10, wherein the antenna pattern further comprises a transmission line connected to an end of the radiation pattern and a signal pad connected to an end of the transmission line, and

the signal pad is disposed in a peripheral region of the substrate layer and does not overlap the second trace.

15. An image display device, characterized in that it comprises:

a display panel; and

the antenna insertion electrode structure of claim 1 stacked on the display panel.

16. The image display device of claim 15, further comprising a polarizing layer disposed between the display panel and the antenna insertion electrode structure.