Display substrate and manufacturing method thereof, display module, and display apparatus
View Patent ↗A display substrate has a display area and a peripheral area adjacent to the display area. The display substrate includes; a substrate; an antenna wiring disposed on a side of the substrate; the antenna wiring being located in the peripheral area and arranged around the display area; and at least one conductive layer located on the side of the substrate. The antenna wiring is arranged in a same layer as the at least one conductive layer.
1 . A display substrate having a display area and a peripheral area adjacent to the display area, the display substrate comprising:
a substrate;
an antenna wiring disposed on a side of the substrate; the antenna wiring being located in the peripheral area and arranged around the display area; and
at least one conductive layer located on the side of the substrate, wherein the antenna wiring is arranged in a same layer as the at least one conductive layer;
wherein the at least one conductive layer includes a first touch electrode layer, a second touch electrode layer, a first source-drain electrode layer and a second source-drain electrode layer, the second touch electrode layer is located on a side of the first touch electrode layer away from the substrate, and the second source-drain electrode layer is located between the first source-drain electrode layer and the first touch electrode layer;
the antenna wiring includes a first portion arranged in a same layer as the second touch electrode layer, a second portion arranged in a same layer as the second source-drain electrode layer, and a third portion arranged in a same layer as the first touch electrode layer;
the second portion and the first portion are connected in parallel through at least one first via hole in at least one insulating layer located between the second touch electrode layer and the second source-drain electrode layer; and
the third portion and the first portion are connected in parallel through at least one second via hole in at least one insulating layer located between the first touch electrode layer and the second touch electrode layer; and the first via hole penetrates through the third portion.
2 . The display substrate according to claim 1 , wherein along an extending direction of the antenna wiring, the first via hole and the second via hole are alternately arranged.
3 . The display substrate according to claim 1 , further comprising:
an encapsulation layer located on a side of the first touch electrode layer proximate to the substrate; wherein
orthogonal projections of the first via hole and the second via hole on the substrate are located outside an orthographic projection of the encapsulation layer on the substrate.
4 . The display substrate according to claim 1 , further comprising:
a voltage signal line located in the peripheral area and surrounding the display area; wherein the voltage signal line is arranged in a same layer as the first source-drain electrode layer or the second source-drain electrode layer; and
an orthographic projection of the antenna wiring on the substrate is located on a side, away from the display area, of an orthographic projection of the voltage signal line on the substrate.
5 . The display substrate according to claim 1 , further comprising:
touch wirings, wherein the touch wirings are arranged in a same layer as the first touch electrode layer or the second touch electrode layer; or part of the touch wirings are arranged in a same layer as the first touch electrode layer, and another part of the touch wirings are arranged in another same layer as the second touch electrode layer; wherein
at least a portion of an orthographic projection of the antenna wiring on the substrate is located on a side, proximate to an outer edge of the peripheral area, of orthographic projections of the touch wirings on the substrate.
6 . The display substrate according to claim 5 , wherein a first overlapped region exists between the orthographic projection of the antenna wiring on the substrate and the orthographic projections of the touch wirings on the substrate, and in the first overlapped region, the antenna wiring and the touch wirings are arranged in different layers.
7 . The display substrate according to claim 1 , further comprising:
at least one first blocking dam located in the peripheral area and arranged around the display area; wherein
an orthographic projection of the antenna wiring on the substrate is located on a side, away from the display area, of an orthographic projection of the at least one first blocking dam on the substrate; or the orthographic projection of the antenna wiring on the substrate is partially overlapped with an orthographic projection of a first blocking dam of the at least one first blocking dam farthest from the display area on the substrate.
8 . The display substrate according to claim 1 , further comprising:
an inorganic insulating layer located on a surface of the substrate proximate to the at least one conductive layer; the inorganic insulating layer extending from the display area to the peripheral area, and a portion of the inorganic insulating layer away from the display area including at least one groove; and
a second blocking dam, an orthographic projection of the second blocking dam on the substrate being overlapped with an orthographic projection of the at least one groove on the substrate.
9 . The display substrate according to claim 1 , wherein the antenna wiring surrounds the display area to form a single-turn coil; wherein
the single-turn coil extends at least from a first position of a side of the display area around the display area to a second position of the side of the display area that is opposite to the first position.
10 . The display substrate according to claim 1 , wherein the antenna wiring includes a multi-turn coil that is spirally arranged along a direction parallel to the substrate and away from the display area;
one of turns of the multi-turn coil proximate to the display area is a first coil; and
the antenna wiring further includes an extending portion connected to an open end of the first coil; a second overlapped region exists between an orthographic projection, on the substrate, of the extending portion and an orthographic projection, on the substrate, of at least one of the turns of the multi-turn coil except the first coil, the at least one turn being a second coil; and in the second overlapped region, the extending portion is arranged in a different layer from the second coil.
11 . The display substrate according to claim 1 , wherein a distance from a boundary, proximate to the display area, of an orthographic projection of the antenna wiring on the substrate to a boundary of the display area is greater than or equal to about 20 μm.
12 . The display substrate according to claim 1 , further having a bonding region located on a side of the peripheral area away from the display area; the display substrate further comprising:
two antenna pins located in the bonding region; wherein
an input end of the antenna wiring is connected to one of the antenna pins, and an output end of the antenna wiring is connected to another one of the antenna pins.
13 . A display module, comprising:
the display substrate according to claim 1 ; and
a flexible printed circuit bonded to the display substrate, the flexible printed circuit having a matching circuit coupled to the antenna wiring and a near field communication chip coupled to the matching circuit.
14 . The display module according to claim 13 , further comprising:
a micro control unit coupled to the near field communication chip.
15 . A display apparatus, comprising:
the display module according to claim 13 ; and
a power module configured to supply power to the display module.
16 . A manufacturing method of a display substrate, wherein the display substrate has a display area and a peripheral area adjacent to the display area; the manufacturing method of the display substrate comprising:
providing a substrate;
forming an antenna wiring on a side of the substrate, the antenna wiring being located in the peripheral area and arranged around the display area; and
forming at least one conductive layer on the side of the substrate, wherein the antenna wiring is manufactured in a same layer as the at least one conductive layer;
wherein the at least one conductive layer includes a first touch electrode layer, a second touch electrode layer, a first source-drain electrode layer and a second source-drain electrode layer, the second touch electrode layer is located on a side of the first touch electrode layer away from the substrate, and the second source-drain electrode layer is located between the first source-drain electrode layer and the first touch electrode layer;
the antenna wiring includes a first portion arranged in a same layer as the second touch electrode layer, a second portion arranged in a same layer as the second source-drain electrode layer, and a third portion arranged in a same layer as the first touch electrode layer;
the second portion and the first portion are connected in parallel through at least one first via hole in at least one insulating layer located between the second touch electrode layer and the second source-drain electrode layer; and
the third portion and the first portion are connected in parallel through at least one second via hole in at least one insulating layer located between the first touch electrode layer and the second touch electrode layer; and the first via hole penetrates through the third portion.
17 . The display substrate according to claim 1 , wherein the antenna wiring includes a multi-turn coil that is spirally arranged along a direction perpendicular to the substrate; wherein
the at least one conductive layer includes a plurality of conductive layers, and every two adjacent conductive layers are provided with at least one insulating layer therebetween; and
two adjacent turns of the multi-turn coil are connected in series through at least one third via hole in the at least one insulating layer.