Antenna module and display device including the same
According to an embodiment, a display device may include a display panel including a display area for displaying images and a non-display area arranged at edges of the display area, an antenna layer disposed on the display panel and including a first area corresponding to the display area, a second area corresponding to the non-display area, and a protruding area protruding from the second area in a first direction. The first direction is a direction away from the display panel, and an antenna driver circuit electrically connected to the antenna layer through an antenna pad disposed in the protruding area. The antenna layer may include a feeder electrode disposed on at least a portion of the second area, a reflector electrode disposed between the feeder electrode and the protruding area in the second area, and a plurality of director electrodes arranged in at least a portion of the first area such that they are spaced apart from one another.
1 . A display device comprising:
a display panel comprising a display area for displaying images and a non-display area arranged at edges of the display area;
an antenna layer disposed on the display panel and comprising a first area corresponding to the display area, a second area corresponding to the non-display area, and a protruding area protruding from the second area in a first direction away from the display panel; and
an antenna driver circuit electrically connected to the antenna layer through an antenna pad disposed in the protruding area,
wherein the antenna layer comprises:
a feeder electrode disposed on at least a portion of the second area;
a reflector electrode disposed between the feeder electrode and the protruding area in the second area; and
a plurality of director electrodes arranged in at least a portion of the first area and each spaced apart from one another.
2 . The display device of claim 1 , wherein the antenna pad is disposed at one end of the protruding area in the antenna layer, wherein the protruding area comprises a conductive path electrically connecting the antenna pad with the feeder electrode, and wherein the conductive path is implemented as a substrate integrated waveguide.
3 . The display device of claim 2 , wherein the conductive path comprises: a feed line configured to supply power to the feeder electrode; and a first ground line and a second ground line disposed on both sides of the feed line, respectively.
4 . The display device of claim 3 , wherein the reflector electrode comprises a first reflector electrode disposed between one side of the feeder electrode and the first ground line; and a second reflector electrode disposed between an opposite side of the feeder electrode and the second ground line.
5 . The display device of claim 3 , wherein a center of each of the plurality of director electrodes is located on a straight line extended from the feed line.
6 . The display device of claim 3 , wherein a center of each of the plurality of director electrodes is located on a straight line inclined by a predetermined angle from a front edge of the feeder electrode.
7 . The display device of claim 6 , wherein the predetermined angle has a range of +15 degrees to −15 degrees with respect to a straight line extended from the feed line.
8 . The display device of claim 1 , wherein the director electrodes have an equal length in a second direction perpendicular to the first direction.
9 . The display device of claim 1 , wherein less than all of the director electrodes selected from among the director electrodes have an equal length in a second direction perpendicular to the first direction.
10 . The display device of claim 1 , wherein the director electrodes have different lengths in a second direction perpendicular to the first direction; and
wherein the director electrodes comprise:
a first director electrode having a first length in the second direction; and
a second director electrode disposed between the first director electrode and the feeder electrode and having a second length longer than the first length in the second direction.
11 . The display device of claim 1 , wherein each of the director electrodes comprises a transparent electrode having a mesh structure.
12 . The display device of claim 11 , wherein each of the director electrodes comprises a plurality of slots, and each of the plurality of slots overlaps with a pixel arranged in the display panel in a thickness direction of the display panel.
13 . The display device of claim 11 , wherein the transparent electrode of each of the director electrodes is disposed such that it does not overlap with a pixel arranged in the display panel in a thickness direction of the display panel.
14 . The display device of claim 1 , wherein the antenna layer comprises a transparent dielectric substrate disposed on the display panel, and the feeder electrode, the reflector electrode and the director electrodes are disposed on an upper surface of the transparent dielectric substrate.
15 . The display device of claim 14 , further comprising a ground electrode disposed on a lower surface of the transparent dielectric substrate.
16 . An antenna module disposed inside a display device, comprising:
a transparent dielectric substrate disposed on a display panel of the display device; and
an antenna electrode disposed on an upper surface of the transparent dielectric substrate,
wherein the antenna electrode comprises:
a feeder electrode and a reflector electrode, each overlapping a non-display area of the display panel in a thickness direction of the display panel; and
a plurality of director electrodes each overlapping a display area of the display panel in the thickness direction.
17 . The antenna module of claim 16 , wherein the transparent dielectric substrate comprises: a first area overlapping the display area in the thickness direction, a second area overlapping the non-display area in the thickness direction, and a protruding area protruding from the second area in a direction away from the display panel and comprising an antenna pad, and
wherein a conductive path for supplying power to the feeder electrode is disposed on the protruding area of the transparent dielectric substrate.
18 . The antenna module of claim 17 , wherein the conductive path is implemented as a substrate integrated waveguide.
19 . The antenna module of claim 17 , wherein a center of each of the plurality of director electrodes is located on a straight line extended from the feed line of the conductive path.
20 . The antenna module of claim 17 , wherein a center of each of the plurality of director electrodes is located on a straight line inclined by a predetermined angle from the feeder electrode.