Antenna device and vehicle antenna device

Abstract

An antenna device includes a transparent substrate, a first conductive layer, and a second conductive layer. The first conductive layer is disposed on a first surface of the transparent substrate and has a plurality of first trenches extending along a first direction and arranged along a second direction, the second direction intersecting the first direction. Each of the plurality of first trenches includes alternating first wide portions and a plurality of first narrow portions. The second conductive layer is located above the first conductive layer, electrically connected to the first conductive layer, and has a plurality of second trenches extending along the second direction and arranged along the first direction. Each of the plurality of second trenches includes alternating second wide portions and a plurality of second narrow portions, and the plurality of first wide portions of the first trenches respectively overlap the plurality of second wide portions of the second trenches. Additionally, an automotive antenna device is also provided.

Claims

1. An antenna device, comprising: Transparent substrate; A first conductive layer is disposed on a first surface of the transparent substrate and includes: a plurality of first wires extending along a first direction and arranged along a second direction, the second direction intersecting the first direction; and at least one second wire extending along the second direction and electrically connecting the plurality of first wires to each other; an antenna electrode is disposed on a second surface of the transparent substrate, the second surface opposite to the first surface; and a second conductive layer is located on the first conductive layer and electrically connected to the first conductive layer.

2. The antenna device as claimed in claim 1, wherein the at least one second conductor comprises a second conductor connecting each of the plurality of first conductors, and the first conductive layer has a comb-shaped profile.

3. The antenna device as claimed in claim 1, wherein the at least one second conductor comprises a plurality of second conductors, the plurality of second conductors respectively connecting two adjacent first conductors to each other.

4. The antenna device as claimed in claim 3, wherein the plurality of second conductors are separated from each other and arranged along the second direction, a portion of the plurality of second conductors is located at a first end of the plurality of first conductors, another portion of the plurality of second conductors is located at a second end of the plurality of first conductors, and the second end of the plurality of first conductors is opposite to the first end.

5. The antenna device as claimed in claim 1, wherein the minimum spacing between the plurality of first conductors is less than or equal to 60 μm.

6. The antenna device as claimed in claim 1, wherein the second conductive layer comprises: Multiple third conductors extend along the second direction and are arranged along the first direction; And at least one fourth wire, extending along the first direction, and electrically connecting the plurality of third wires to each other.

7. The antenna apparatus of claim 6, wherein the groove between the plurality of first conductors overlaps the groove between the plurality of third conductors.

8. The antenna device as claimed in claim 6, wherein the at least one fourth conductor comprises a plurality of fourth conductors, the plurality of fourth conductors respectively connecting two adjacent third conductors to each other, and the plurality of fourth conductors being separate from each other and arranged along the first direction.

9. The antenna apparatus of claim 8, wherein a portion of the plurality of fourth conductors is located at a first end of the plurality of third conductors, and another portion of the plurality of fourth conductors is located at a second end of the plurality of third conductors, the second end of the plurality of third conductors being opposite to the first end.

10. The antenna device as claimed in claim 6 further includes a third conductive layer located above the second conductive layer and including a fifth conductor overlapping the second conductive layer.

11. The antenna device as claimed in claim 10, wherein the fifth conductor extends along the second direction.

12. The antenna device as claimed in claim 11, wherein the width ratio of the third conductor overlapping the fifth conductor in the second conductive layer to the fifth conductor is 0.5 to 2.

0.

13. An antenna device, comprising: Transparent substrate; A first conductive layer is disposed on a first surface of the transparent substrate and has a plurality of first trenches extending along a first direction and arranged along a second direction, the second direction intersecting the first direction. The plurality of first trenches each include a plurality of alternating first wide portions and a plurality of first narrow portions. A second conductive layer is disposed on the first conductive layer and electrically connected to the first conductive layer. The second conductive layer has a plurality of second trenches extending along the second direction and arranged along the first direction. The plurality of second trenches each include a plurality of alternating second wide portions and a plurality of second narrow portions. The plurality of first wide portions of the first trenches overlap the plurality of second wide portions of the second trenches.

14. The antenna device of claim 13, wherein the widths of the first narrow portion and the second narrow portion are less than or equal to 60 μm, and the widths of the first wide portion and the second wide portion are less than or equal to 340 μm.

15. The antenna device as claimed in claim 13 further includes an antenna electrode disposed on a second surface of the transparent substrate, the second surface being opposite to the first surface.

16. The antenna device of claim 13 further includes a third conductive layer located above the second conductive layer and including a transmission line overlapping the second conductive layer, wherein the width ratio of the conductor of the second conductive layer overlapping the transmission line to the width of the transmission line is 0.5 to 2.

0.

17. The antenna device as claimed in claim 16, wherein the transmission line extends along the second direction.

18. The antenna device of claim 13 further includes a wafer located on the third conductive layer and electrically connected to the third conductive layer and the first conductive layer.

19. A vehicle antenna device, comprising: Transparent substrate, installed in vehicle windows or sunroofs; A first conductive layer is disposed on a first surface of the transparent substrate and includes: a plurality of first wires extending along a first direction and arranged along a second direction, the second direction intersecting the first direction; and at least one second wire extending along the second direction and electrically connecting the plurality of first wires to each other; an antenna electrode is disposed on a second surface of the transparent substrate, the second surface opposite to the first surface; and a second conductive layer is located on the first conductive layer and electrically connected to the first conductive layer.

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