US-12620688-B2 - Display substrate and method for manufacturing display substrate

US12620688B2US 12620688 B2US12620688 B2US 12620688B2US-12620688-B2

Abstract

The present disclosure provides to a display substrate and a method for manufacturing the display substrate. The display substrate include: a substrate; a polarizing layer disposed on a light-emitting side of the substrate; a common electrode layer disposed on a light-incident side of the substrate; a light shielding layer disposed on a side of the common electrode layer away from the substrate; and at least one antenna array, wherein each of the at least one antenna array comprises a plurality of antenna units, and each antenna unit includes a first radiating portion disposed on the light-emitting side of the substrate and a grounding portion disposed on the light-incident side of the substrate.

Inventors

Hai Yu
Jia Fang

Assignees

BOE TECHNOLOGY GROUP CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20210107
Priority Date: 20200122

Claims (13)

1 . A display substrate, comprising: a single substrate; a polarizing layer disposed on a light-emitting side of the single substrate; a common electrode layer disposed on a light-incident side of the single substrate opposite to the light-emitting side of the single substrate in a direction vertical to the single substrate; a light shielding layer disposed on a side of the common electrode layer away from the single substrate; and at least one antenna array, wherein each of the at least one antenna array comprises a plurality of antenna units, and each antenna unit of the plurality of antenna units comprises a first radiating portion disposed on the light-emitting side of the single substrate and a grounding portion disposed on the light-incident side of the single substrate; wherein the light shielding layer comprises a black matrix; wherein the common electrode layer comprises a common electrode configured to cooperate with electrodes on an array substrate to achieve displaying, wherein each antenna unit of the plurality of antenna units further comprises a second radiating portion disposed on a side of the first radiating portion away from the single substrate, and in each antenna unit of the plurality of antenna units, a projection range of the second radiating portion on the single substrate falls within a projection range of the first radiating portion on the single substrate, wherein an operating frequency of the second radiating portion is greater than an operating frequency of the first radiating portion, and each antenna unit of the plurality of antenna units is configured to transfer energy from the first radiating portion to the second radiating portion through a coupling of the first radiating portion and the second radiating portion, and wherein the grounding portion is disposed on a side of the light shielding layer away from the common electrode layer, a projection range of the grounding portion on the single substrate falls within a projection range of the black matrix on the single substrate, and the grounding portion is implemented as a first grid, the black matrix is implemented as a second grid, the first grid of the grounding portion is laid out in a same manner as the second grid of the black matrix, and wherein the first grid is a metal grid.
2 . The display substrate of claim 1 , wherein in each antenna unit of the plurality of antenna units, the first radiating portion is disposed on the polarizing layer on a side of the polarizing layer facing the single substrate, and the second radiating portion is disposed on the polarizing layer on a side of the polarizing layer away from the single substrate.
3 . The display substrate of claim 1 , wherein in each antenna unit of the plurality of antenna units, the first radiating portion and the second radiating portion are disposed on a same side of the polarizing layer, and the display substrate further comprises a first insulating layer disposed between the first radiating portion and the second radiating portion.
4 . The display substrate of claim 1 , wherein the first radiating portion is disposed on a side of the polarizing layer facing the single substrate or a side of the polarizing layer away from the single substrate.
5 . The display substrate of claim 1 , wherein the first radiating portion is implemented as a third grid, and the third grid is another metal grid, and wherein a width of grid lines of each of the first grid and the third grid is less than or equal to 5 μm, a distance between adjacent grid lines is greater than or equal to 200 μm.
6 . The display substrate of claim 5 , wherein each of the first grid and the third grid is made of at least one of copper, gold or silver.
7 . The display substrate of claim 1 , wherein, the projection range of the first radiating portion on the single substrate falls within the projection range of the grounding portion on the single substrate; and the first radiating portion comprises a first portion for radiating energy and a second portion for feeding power to the first portion for radiating energy, and the second portion extends from the first portion to an edge of the display substrate.
8 . The display substrate of claim 1 , wherein the at least one antenna array comprises at least one of a first antenna array, a second antenna array, a third antenna array or a fourth antenna array, a plurality of antenna units of the first antenna array are arranged along a first edge of the display substrate, a plurality of antenna units of the second antenna array are arranged along a second edge of the display substrate opposite to the first edge, a plurality of antenna units of the third antenna array are arranged along a third edge of the display substrate, and a plurality of antenna units of the fourth antenna array are arranged along a fourth edge of the display substrate opposite to the third edge.
9 . The display substrate of claim 8 , wherein each of the first antenna array, the second antenna array, the third antenna array and the fourth antenna array comprises four or more antenna units.
10 . A method for manufacturing the display substrate of claim 1 , comprising: forming the common electrode layer, the light shielding layer, and the grounding portion of each of the plurality of antenna units of the at least one antenna array on the light-incident side of the single substrate; and forming the polarizing layer and the first radiating portion of each of the plurality of antenna units of the at least one antenna array on the light-emitting side of the single substrate.
11 . The method of claim 10 , further comprising: for each of the plurality of antenna units, forming the second radiating portion on the side of the first radiating portion away from the single substrate, so that the projection range of the second radiating portion on the single substrate falls within the projection range of the first radiating portion on the single substrate.
12 . The method of claim 11 , wherein the first radiating portion and the grounding portion of each of the plurality of antenna units are formed by at least one of magnetron sputtering, thermal evaporation or electroplating.
13 . The method of claim 10 , wherein the forming the common electrode layer, the light shielding layer and the grounding portion of each of the plurality of antenna units of the at least one antenna array on the light-incident side of the single substrate comprises: forming the common electrode layer on a surface of the single substrate at the light-incident side of the single substrate; forming the light-shielding layer on the common electrode layer; forming the grounding portion of each of the plurality of antenna units of the at least one antenna array on the black matrix, so that the projection range of the grounding portion on the single substrate falls within the projection range of the black matrix on the single substrate.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a Section 371 National Stage Application of International Application No. PCT/CN2021/070638, filed on Jan. 7, 2021, entitled “DISPLAY SUBSTRATE AND METHOD FOR MANUFACTURING DISPLAY SUBSTRATE”, which claims priority to Chinese Application No. 202010076023.6, filed on Jan. 22, 2020, which are incorporated herein by reference in their entirety. TECHNICAL FIELD The present disclosure relates to the field of display technology, and in particular to a display substrate and a method for manufacturing the display substrate. BACKGROUND In conventional technology, antennas of an electronic device are usually disposed in areas not occupied by a display. With advancement of technology, the display occupies more and more space on the electronic device such as mobile phones, TVs, tablets, notebook computers, desktop computers and the like, such that the space available for deployment of antennas on electronic device becomes smaller. SUMMARY According to one aspect of the present disclosure, a display substrate is provided, including: a substrate;a polarizing layer disposed on a light-emitting side of the substrate;a common electrode layer disposed on a light-incident side of the substrate;a light shielding layer disposed on a side of the common electrode layer away from the substrate; andat least one antenna array, wherein each of the at least one antenna array comprises a plurality of antenna units, and each antenna unit comprises a first radiating portion disposed on the light-emitting side of the substrate and a grounding portion disposed on the light-incident side of the substrate. For example, the antenna unit further comprises a second radiating portion disposed on a side of the first radiating portion away from the substrate. For example, the first radiating portion is disposed on the polarizing layer at a side of the polarizing layer facing the substrate, and the second radiating portion is disposed on the polarizing layer at a side of the polarizing layer away from the substrate. For example, the first radiating portion and the second radiating portion are disposed on the same side of the polarizing layer, and the display substrate further comprises a first insulating layer disposed between the first radiating portion and the second radiating portion. For example, a projection range of the second radiating portion on the substrate falls within a projection range of the first radiating portion on the substrate. For example, the grounding portion is disposed on a side of the light shielding layer away from the common electrode layer. For example, the light shielding layer comprises a black matrix; and a projection of the grounding portion on the substrate falls within a projection of the black matrix on the substrate. For example, the grounding portion is disposed between the substrate and the common electrode layer. For example, the display substrate further includes a second insulating layer disposed between the grounding portion and the common electrode layer. For example, the first radiating portion is disposed on a side of the polarizing layer facing the substrate or a side of the polarizing layer away from the substrate. For example, each of the first radiating portion and the grounding portion is implemented as a metal grid, a width of grid lines of the metal grid is less than or equal to 5 μm, a distance between adjacent grid lines is greater than or equal to 200 μm. For example, the metal grid is made of at least one of copper, gold or silver. For example, the projection range of the first radiating portion on the substrate falls within a projection range of the grounding portion on the substrate; and the first radiating portion comprises a first portion for radiating energy and a second portion for feeding power to the first portion, and the second portion extends from the first portion to an edge of the display substrate. For example, the at least one antenna array comprises at least one of a first antenna array, a second antenna array, a third antenna array or a fourth antenna array, a plurality of antenna units of the first antenna array are arranged along a first edge of the display substrate, a plurality of antenna units of the second antenna array are arranged along a second edge of the display substrate opposite to the first edge, a plurality of antenna units of the third antenna array are arranged along a third edge of the display substrate, and a plurality of antenna units of the fourth antenna array are arranged along a fourth edge of the display substrate opposite to the third edge. For example, each of the first antenna array, the second antenna array, the third antenna array and the fourth antenna array comprises 4 or more antenna units. According to another aspect of the present disclosure, a method for manufacturing the above-mentioned display substrate, including: forming a common electrode layer, a light shielding layer and a gro