Display substrate, display device and wireless charging method

Patent metadata

Field	Value
Publication number	US-11329508-B2
Application number	US-201916640211-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 30, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A display substrate, a display device and a wireless charging method are provided. The display substrate includes: a display area and a peripheral area located outside the display area. The peripheral area includes a circuit binding area. The display substrate includes a base substrate and a wireless charging antenna disposed on the base substrate. The wireless charging antenna includes a power receiving coil and a connection lead. The connection lead is connected to the power receiving coil, and the power receiving coil is connected to the circuit binding area.

First claim

What is claimed is:

1. A display substrate, comprising:
a display area and a peripheral area located outside the display area, wherein the peripheral area comprises a circuit binding area, the display substrate comprises a base substrate and a wireless charging antenna disposed on the base substrate, the wireless charging antenna comprises a power receiving coil and a connection lead, wherein the connection lead is connected to the power receiving coil, and the power receiving coil is connected to the circuit binding area,
wherein the power receiving coil has a rectangular spiral shape, the power receiving coil comprises a first conductive line extending in a first direction and a second conductive line extending in a second direction, the first conductive line and the second conductive line are perpendicular to each other and alternately connected in an end-to-end manner,
wherein the display substrate further comprises a pixel electrode, the first conductive line is disposed on a same layer as the pixel electrode and is made of a same material as the pixel electrode.

2. The display substrate according to claim 1 , further comprising: a touch electrode and a wiring, wherein the wiring comprises a plurality of dummy wirings and a touch electrode wiring connected to the touch electrode, wherein at least one of the plurality of dummy wirings is used as the second conductive line.

3. The display substrate according to claim 2 , further comprising: a data line, wherein the wiring is disposed on a same layer as the data line and made of a same material as the data line, and the wiring is parallel to the data line.

4. The display substrate according to claim 3 , further comprising: a gate line, wherein the first conductive line is parallel to the gate line.

5. The display substrate according to claim 2 , further comprising: a common electrode, wherein the common electrode is reused as the touch electrode.

6. The display substrate according to claim 1 , the first conductive line and the second conductive line are disposed on different layers, and the first conductive line and the second conductive line are connected through a via hole.

7. The display substrate according to claim 1 , further comprising: a black matrix; wherein the first conductive line and the second conductive line are disposed in an area covered by the black matrix.

8. A display panel, comprising the display substrate according to claim 1 .

9. A display device, comprising the display panel according to claim 8 .

10. The display device according to claim 9 , further comprising: a main board, a flexible printed circuit board connector, and a battery, wherein the main board is connected to the flexible printed circuit board connector, the main board is connected to the battery, and the connection lead connected to the power receiving coil is connected to the flexible printed circuit board connector in the circuit binding area.

11. A wireless charging method, applied to the display device according to claim 10 , comprising:
dividing a duration of one frame of display image into a display period, a touch period and a charging period, and performing a wireless charging during the charging period by using the wireless charging antenna.

12. A wireless charging method, applied to the display device according to claim 9 , comprising:
dividing a duration of one frame of display image into a display period, a touch period and a charging period, and performing a wireless charging during the charging period by using the wireless charging antenna.

13. The display substrate according to claim 1 , further comprising: a touch electrode and a wiring, wherein the wiring comprises a plurality of dummy wirings and a touch electrode wiring connected to the touch electrode, wherein at least one of the plurality of dummy wirings is used as the second conductive line.

14. The display substrate according to claim 13 , further comprising: a data line, wherein the wiring is disposed on a same layer as the data line and made of a same material as the data line, and the wiring is parallel to the data line.

15. The display substrate according to claim 14 , further comprising: a gate line, wherein the first conductive line is parallel to the gate line.

16. The display substrate according to claim 13 , further comprising: a common electrode, wherein the common electrode is reused as the touch electrode.

17. The display substrate according to claim 1 , further comprising: a black matrix; wherein the first conductive line and the second conductive line are disposed in an area covered by the black matrix.

18. A display substrate, comprising:
a display area and a peripheral area located outside the display area, wherein the peripheral area comprises a circuit binding area, the display substrate comprises a base substrate and a wireless charging antenna disposed on the base substrate, the wireless charging antenna comprises a power receiving coil and a connection lead, wherein the connection lead is connected to the power receiving coil, and the power receiving coil is connected to the circuit binding area,
wherein the power receiving coil has a rectangular spiral shape, the power receiving coil comprises a first conductive line extending in a first direction and a second conductive line extending in a second direction, the first conductive line and the second conductive line are perpendicular to each other and alternately connected in an end-to-end manner,
wherein the display substrate further comprises a touch electrode and a wiring, the wiring comprises a plurality of dummy wirings and a touch electrode wiring connected to the touch electrode, wherein at least one of the plurality of dummy wirings is used as the second conductive line.

19. A wireless charging method, applied to a display substrate, wherein the display substrate comprises a display area and a peripheral area located outside the display area, wherein the peripheral area comprises a circuit binding area, the display substrate comprises a base substrate and a wireless charging antenna disposed on the base substrate, the wireless charging antenna comprises a power receiving coil and a connection lead, wherein the connection lead is connected to the power receiving coil, and the power receiving coil is connected to the circuit binding area,
wherein the wireless charging method comprises:

dividing a duration of one frame of display image into a display period, a touch period and a charging period, and performing a wireless charging during the charging period by using the wireless charging antenna.

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Ren Yanwei
• Shan Yue
• Feng Yu
• Liu Min

Classifications

• H04B5/266

  One coil at each side, e.g. with primary and secondary coils · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• H02J7/02

  for charging batteries from AC mains by converters · CPC title

• G02F2201/121

  common or background · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title