Antenna laminate and image display device including the same
An antenna laminate according to an embodiment of the present invention includes a first dielectric layer and an antenna electrode layer disposed above a first ground layer, and a second dielectric layer and a second ground layer disposed below the first ground layer. The first ground layer and the second ground layer may form a ground composite to improve signal characteristics of the antenna.
1. An antenna laminate comprising:
a first ground layer;
a first dielectric layer disposed on the first ground layer;
an antenna electrode layer disposed on the first dielectric layer, the antenna electrode layer comprising a radiation electrode, a transmission line branched from the radiation electrode, and a signal pad connected to an end of the transmission line;
a second ground layer disposed below the first ground layer; and
a second dielectric layer disposed between the first ground layer and the second ground layer.
2. The antenna laminate according to claim 1 , the first ground layer comprises a touch sensor electrode.
3. The antenna laminate according to claim 2 , wherein the touch sensor electrode comprises a transparent conductive oxide.
4. The antenna laminate according to claim 1 , wherein the second ground layer comprises a low resistance ground electrode comprising a material having a lower resistance than the first ground layer; and
the low resistance ground electrode is overlapped with or fully covered by the radiation electrode of the antenna electrode layer.
5. The antenna laminate according to claim 4 , wherein the low resistance ground electrode is fully covered by the radiation electrode.
6. The antenna laminate according to claim 1 , further comprising a ground pad around the signal pad, the ground pad electrically separated from the signal pad and the transmission line.
7. The antenna laminate according to claim 1 , wherein the second ground layer comprises metal having a lower resistance than the first ground layer.
8. The antenna laminate according to claim 1 , wherein the second dielectric layer has a thickness of 1 to 500 μm.
9. The antenna laminate according to claim 1 , wherein the first dielectric layer has a thickness of 200 μm or more.
10. The antenna laminate according to claim 1 , wherein the antenna electrode layer has a mesh structure.
11. The antenna laminate according to claim 1 , wherein the first dielectric layer comprises an adhesive layer.
12. The antenna laminate according to claim 1 , further comprising a first adhesive layer disposed between the antenna electrode layer and the first dielectric layer, and a second adhesive layer disposed between the first dielectric layer and the first ground layer.
13. An image display device comprising:
the antenna laminate according to claim 1 ; and
a display panel comprising an electrode structure and an encapsulation layer formed on the electrode structure,
wherein the electrode structure of the display panel is the second ground layer of the antenna laminate; and
the encapsulation layer of the display panel is the second dielectric layer of the antenna laminate.
14. The antenna laminate according to claim 2 , wherein the second ground layer comprises a low resistance ground electrode comprising a material having a lower resistance than the touch sensor electrode.
15. The antenna laminate according to claim 14 , wherein the low resistance ground electrode is overlapped with or fully covered by the radiation electrode of the antenna electrode layer.
16. An image display device comprising:
a first ground layer;
a first dielectric layer disposed on the first ground layer;
an antenna electrode layer disposed on the first dielectric layer; and
a display panel comprising:
an electrode structure comprising a second ground layer disposed below the first ground layer; and
an encapsulation layer comprising a second dielectric layer disposed between the first ground layer and the second ground layer.