Antenna device and display device comprising the same
An antenna device according to an embodiment of the present invention includes a dielectric layer, a first electrode layer disposed on a top surface of the dielectric layer, the first electrode layer including a radiation pattern, a second electrode layer disposed on a bottom surface of the dielectric layer, and a flexible circuit board connecting the first electrode layer and the second electrode layer with each other along a lateral portion of the dielectric layer. Efficiency of grounding and noise removing may be improved by the flexible circuit board.
1. An antenna device, comprising:
a dielectric layer;
a first electrode layer disposed on a top surface of the dielectric layer, the first electrode layer comprising a radiating patch pattern;
a second electrode layer disposed on a bottom surface of the dielectric layer;
a flexible circuit board;
a first conductive intermediate layer connecting the flexible circuit board and the first electrode layer with each other; and
a second conductive intermediate layer connecting the flexible circuit board and the second electrode layer with each other,
wherein the flexible circuit board connecting the first electrode layer and the second electrode layer with each other via the first conductive intermediate layer and the second conductive intermediate layer along a lateral portion of the dielectric layer; and
the flexible circuit board comprises:
a core layer;
an upper wiring disposed on a top surface of the core layer, the upper wiring including a signal wiring and an upper ground wiring;
a lower wiring disposed on a bottom surface of the core layer; and
a ground contact penetrating through the core layer to electrically connect the upper ground wiring and the lower wiring.
2. The antenna device according to claim 1 , wherein the first electrode layer comprises a ground pad, and the flexible circuit board and the ground pad are connected with each other.
3. The antenna device according to claim 2 , wherein the second electrode layer comprises a ground layer.
4. The antenna device according to claim 1 , wherein the ground pad of the first electrode layer is electrically connected to the second electrode layer through the upper ground wiring, the ground contact and the lower wiring of the flexible circuit board.
5. The antenna device according to claim 4 , wherein the lower wiring of the flexible circuit board serves as a lower ground wiring.
6. The antenna device according to claim 1 , wherein the first electrode layer further comprises a signal pad, and the signal pad is electrically connected to the signal wiring of the upper wiring in the flexible circuit board.
7. The antenna device according to claim 6 , wherein the ground pad comprises a pair of ground pads, and the signal pad is interposed between the pair of the ground pads.
8. The antenna device according to claim 1 , wherein the flexible circuit board comprises a first flexible circuit board electrically connected to the first electrode layer, and a second flexible circuit board electrically connected to the second electrode layer.
9. The antenna device according to claim 8 , wherein the flexible circuit board further comprises a conductive connection structure electrically connecting the first flexible circuit board and the second flexible circuit board with each other.
10. The antenna device according to claim 1 , wherein first electrode layer comprises a mesh structure.
11. The antenna device according to claim 10 , further comprising a dummy mesh layer arranged around the radiating patch pattern.
12. A display device comprising the antenna device according to claim 1 .
13. The display device according to claim 12 , wherein the display device comprises a display area and a peripheral area;
at least a portion of the radiating patch pattern of the first electrode layer is disposed in the display area; and
the flexible circuit board connects the first electrode layer and the second electrode layer to each other through the peripheral area.