Antenna unit and manufacturing method thereof, display device, and electronic apparatus
An antenna unit, a manufacturing method thereof, a display device, and an electronic apparatus. The antenna unit includes a radiation main body, at least one feed line, and a plurality of grounding portions. The at least one feed line and the radiation main body are electrically connected, the radiation main body, the at least one feed line, and the plurality of grounding portions are provided in a same layer.
1 . An antenna unit, comprising:
a radiation main body,
at least one feed line, electrically connected with the radiation main body, and
a plurality of grounding portions, wherein the radiation main body, the at least one feed line, and the plurality of grounding portions are provided in a same layer,
wherein the at least one feed line comprises a first feed line and a second feed line, and the antenna unit comprises a dual-polarized antenna,
the first feed line is located at a first side of the radiation main body and electrically connected with the radiation main body, and the second feed line is located at a second side of the radiation main body and electrically connected with the radiation main body,
the plurality of grounding portions comprise a first grounding portion, a second grounding portion, a third grounding portion, and a fourth grounding portion, wherein the first grounding portion and the second grounding portion are respectively located at both sides of the first feed line, and the third grounding portion and the fourth grounding portion are respectively located at both sides of the second feed line;
the first feed line comprises a first section and a second section, the first section is close to the radiation main body, the second section is electrically connected with the first section, the first section is electrically connected with the radiation main body, and the second section extends from the first section between the first grounding portion and the second grounding portion;
the second feed line comprises a third section and a fourth section, the third section is close to the radiation main body, and the fourth section is electrically connected with the third section, the third section is electrically connected with the radiation main body, and the fourth section extends from the third section between the third grounding portion and the fourth grounding portion;
the first grounding portion, the second grounding portion, the third grounding portion, and the fourth grounding portion are arranged along a reference direction,
the symmetry axis of the radiation main body is at a first preset angel with respect to the reference direction, the first preset angle is in a range of (45 degrees±δ), wherein δ is a preset deviation value,
at least one selected from the group consisting of the first section and the third section is perpendicular to the symmetry axis of the radiation main body, and
at least one selected from the group consisting of the second section and the fourth section is perpendicular to the reference direction.
2 . The antenna unit according to claim 1 , wherein the second grounding portion and the third grounding portion are electrically connected.
3 . The antenna unit according to claim 1 , wherein
the radiation main body has a symmetrical contour, the first section and the third section are symmetrical with respect to a symmetry axis of the radiation main body, and the symmetry axis of the radiation main body is a diagonal line led out from an included angle formed by the first side and the second side of the radiation main body.
4 . The antenna unit according to claim 3 , wherein the third grounding portion and the fourth grounding portion are arranged along a reference direction,
the first grounding portion and the second grounding portion are arranged perpendicular to the reference direction,
the symmetry axis of the radiation main body is at a first preset angel with respect to the reference direction, the first preset angle is in a range of (45 degrees±δ), wherein δ is a preset deviation value,
at least one of the first section and the third section is perpendicular to the symmetry axis of the radiation main body, and
the second section is parallel to the reference direction, the fourth section is perpendicular to the reference direction.
5 . The antenna unit according to claim 3 , wherein a position where the third section is electrically connected with the radiation main body and a position where the first section is electrically connected with the radiation main body are symmetrical with respect to the symmetry axis of the radiation main body.
6 . An antenna unit, comprising:
a radiation main body,
at least one feed line, electrically connected with the radiation main body, and
a plurality of grounding portions, wherein the radiation main body, the at least one feed line, and the plurality of grounding portions are provided in a same layer,
wherein the at least one feed line comprises a first feed line and a second feed line, and the antenna unit comprises a dual-polarized antenna,
the first feed line is located at a first side of the radiation main body and electrically connected with the radiation main body, and the second feed line is located at a second side of the radiation main body and electrically connected with the radiation main body,
the plurality of grounding portions comprise a first grounding portion, a second grounding portion, a third grounding portion, and a fourth grounding portion, wherein the first grounding portion and the second grounding portion are respectively located at both sides of the first feed line, and the third grounding portion and the fourth grounding portion are respectively located at both sides of the second feed line;
a side of the second grounding portion facing the radiation main body is provided with a first protrusion, two sides of the first protrusion opposite to the radiation main body are parallel to each other, and
a side of the third grounding portion facing the radiation main body is provided with a second protrusion, two sides of the second protrusion opposite to the radiation main body are parallel to each other.
7 . The antenna unit according to claim 1 , wherein a length of the first feed line is greater than a length of the second feed line,
the first grounding portion comprises a first body and a first strip, and the first strip is located at a side of the first body facing the first feed line and extends in a direction parallel to the first feed line, and
the second grounding portion comprises a second body and a second strip, and the second strip is located at a side of the second body facing the first feed line and extends in a direction parallel to the first feed line.
8 . The antenna unit according to claim 7 , wherein a distance between the first strip and the first feed line is equal to a distance between the first body and the first feed line, and a distance between the second strip and the second feed line is equal to a distance between the second body and the second feed line.
9 . The antenna unit according to claim 1 , wherein a distance between the first feed line and the first grounding portion and a distance between the first feed line and the second grounding portion are equal to an integral multiple of a line width of the first feed line, and a distance between the second feed line and the third grounding portion and a distance between the second feed line and the fourth grounding portion are equal to an integral multiple of a line width of the second feed line.
10 . The antenna unit according to claim 1 , wherein a distance between the second grounding portion and the third grounding portion is greater than 0.2 mm.
11 . The antenna unit according to claim 1 , wherein the radiation main body, the first feed line, the second feed line, and the plurality of grounding portions all comprise metal grids.
12 . The antenna unit according to claim 1 , wherein at least part of the radiation main body is electrically connected with the at least one feed line.
13 . A display device, comprising:
a display panel,
an antenna layer, comprising at least one antenna unit according to claim 1 , the at least one antenna unit being provided at a display side of the display panel, and
a reflection layer, provided at a non-display side of the display panel,
wherein the display panel comprises a liquid crystal display panel and a backlight module, the backlight module comprises a metal reflection plate, and the reflection layer is the metal reflection plate; or
the display panel comprises an organic light-emitting diode display panel, and the reflection layer comprises a metal heat-sink layer of the organic light-emitting diode display panel.
14 . The display device according to claim 13 , further comprising:
a cover plate, provided at a display side of the display panel,
wherein the antenna layer is provided at a side of the cover plate facing the display panel and being located between the cover plate and the reflection layer.
15 . The display device according to claim 13 , wherein the display panel comprises a display region and a non-display region, and at least part of the at least one antenna unit is provided in the non-display region of the display panel.
16 . The display device according to claim 13 , wherein the display device comprises a first edge, a second edge opposite to the first edge, a third edge, and a fourth edge opposite to the third edge,
the antenna unit comprises at least one selected from the group consisting of following:
a first antenna array, provided at the first edge;
a second antenna array, provided at the second edge;
a third antenna array, provided at the third edge; and
a fourth antenna array, provided at the fourth edge.
17 . The display device according to claim 16 , wherein the first antenna array, the second antenna array, the third antenna array, and the fourth antenna array each comprise N antenna units arranged in a 1×N array, wherein N is an integer and N≥4.
18 . A manufacturing method of an antenna unit, comprising:
providing a flexible substrate;
forming a metal layer on the flexible substrate, and etching the metal layer to form an antenna comprising a radiation main body, at least one feed line and a plurality of grounding portions, and
forming an adhesive protection layer on a side of the antenna away from a display panel,
wherein the at least one feed line comprises a first feed line and a second feed line, and the antenna unit comprises a dual-polarized antenna,
the first feed line is located at a first side of the radiation main body and electrically connected with the radiation main body, and the second feed line is located at a second side of the radiation main body and electrically connected with the radiation main body,
the plurality of grounding portions comprise a first grounding portion, a second grounding portion, a third grounding portion, and a fourth grounding portion, wherein the first grounding portion and the second grounding portion are respectively located at both sides of the first feed line, and the third grounding portion and the fourth grounding portion are respectively located at both sides of the second feed line;
the first feed line comprises a first section and a second section, the first section is close to the radiation main body, the second section is electrically connected with the first section, the first section is electrically connected with the radiation main body, and the second section extends from the first section between the first grounding portion and the second grounding portion;
the second feed line comprises a third section and a fourth section, the third section is close to the radiation main body, and the fourth section is electrically connected with the third section, the third section is electrically connected with the radiation main body, and the fourth section extends from the third section between the third grounding portion and the fourth grounding portion;
the first grounding portion, the second grounding portion, the third grounding portion, and the fourth grounding portion are arranged along a reference direction,
the symmetry axis of the radiation main body is at a first preset angel with respect to the reference direction, the first preset angle is in a range of (45 degrees±δ), wherein δ is a preset deviation value,
at least one selected from the group consisting of the first section and the third section is perpendicular to the symmetry axis of the radiation main body, and
at least one selected from the group consisting of the second section and the fourth section is perpendicular to the reference direction.