Antenna unit and manufacturing method thereof, display device, and electronic apparatus

A display device, comprising:

• a display panel,
• an antenna layer, comprising at least one antenna unit, wherein the at least one antenna unit comprises a radiation main body, at least one feed line which is electrically connected with the radiation main body, and a plurality of grounding portions;
• the radiation main body, the at least one feed line, and the plurality of grounding portions are provided in a same layer, and the at least one antenna unit is 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;
• 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,
• a radiation main body of the at least one of antenna unit comprises an antenna radiation portion, at least one feed line of the at least one antenna unit comprises a feed portion, and each of the plurality of the grounding portions of the at least one antenna unit comprises a reference signal pattern portion, and
• the antenna radiation portion, the feed portion, and the reference signal pattern portion are provided in the display region of the display panel.

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 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 second section and the fourth section are unsymmetrical with respect to the symmetry axis of the radiation main body.