Touch screen, electronic device, and wireless charging method

• US 9,722,453 B2
• Filed: 02/04/2015
• Issued: 08/01/2017
• Est. Priority Date: 09/24/2014
• Status: Active Grant

• Current Assignee: Lenovo Company Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Company Limited (Lenovo Group Ltd.)
• Inventors: Wang, Yanru
• Primary Examiner(s): Berhanu, Samuel
• Application Number:
  US14/613,938
• Publication Number:
  US 20160087482A1
• Time in Patent Office: 909 Days
• Field of Search: 320108
• CPC Class Codes: G06F 1/16 Constructional details or arrangements
• CPC Class Codes: G06F 1/1635 Details related to the integration of battery packs and other power supplies such as fuel cells or integrated AC adapter
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 1/26 Power supply means, e.g. regulation thereof for memories G11C
• CPC Class Codes: G06F 1/263 Arrangements for using multiple switchable power supplies, e.g. battery and AC G06F1/30 takes precedence
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

A touch screen, an electronic device, and a wireless charging method are provided. The touch screen includes: a substrate adapted to carry a touch sensor circuit, where the touch sensor circuit includes a first touch sensor circuit and a second touch sensor circuit; and an equivalent switch arranged between the first touch sensor circuit and the second touch sensor circuit, where the first touch sensor circuit and the second touch sensor circuit form the touch sensor circuit in a case that the equivalent switch is off; and the first touch sensor circuit and the second touch sensor circuit form an equivalent coil and two ends of the equivalent coil are connected to a rechargeable power supply to generate an induced current for charging the rechargeable power supply, in a case that the equivalent switch is on.

Claims

1. A touch screen, applied to an electronic device, comprising:

a substrate, adapted to carry a touch sensor circuit, wherein (i) the touch sensor circuit comprises a first touch sensor circuit and a second touch sensor circuit and (ii) the first touch sensor circuit and the second touch sensor circuit are arranged in different planes that are parallel to the substrate;

wherein the first touch sensor circuit comprises a plurality of conductive lines arranged along a first direction, and the second touch sensor circuit comprises a plurality of conductive lines arranged along a second direction, wherein the second direction is different from the first direction;

an insulating layer arranged between the first touch sensor circuit and the second touch sensor circuit; and

an equivalent switch arranged between the first touch sensor circuit and the second touch sensor circuit, wherein the first touch sensor circuit and the second touch sensor circuit form the touch sensor circuit, in a case that the equivalent switch is off; and

the first touch sensor circuit and the second touch sensor circuit form an equivalent coil and two ends of the equivalent coil are connected to a rechargeable power supply to generate an induced current for charging the rechargeable power supply, in a case that the equivalent switch is on.

2. The touch screen according to claim 1, wherein:

an end of the equivalent switch is connected with a first lead led out from a first region of the first touch sensor circuit, another end of the equivalent switch is connected with a second lead led out from a second region of the second touch sensor circuit, and the insulating layer is arranged between the first region and the second region; and

the first region is overlapped with the second region overlap, in a planar circuit diagram of the touch sensor circuit formed by the first touch sensor circuit and the second touch sensor circuit.

3. The touch screen according to claim 2, wherein the equivalent switch is a controller chip, the first lead and the second lead are connected to the controller chip, and the controller chip is adapted to control the first lead and the second lead to be connected or disconnected.

4. The touch screen according to claim 3, wherein the controller chip is further adapted to control the first lead and the second lead to be connected, in a case that the electronic device is in a standby state, or in a case that a parameter of an external electric field of the electronic device is larger than a threshold.

5. An electronic device, comprising a touch screen, wherein the touch screen is applied to an electronic device and comprises:

a substrate, adapted to carry a touch sensor circuit, wherein (i) the touch sensor circuit comprises

a first touch sensor circuit and a second touch sensor circuit and (ii) the first touch sensor circuit and the second touch sensor circuit are arranged in different planes that are parallel to the substrate;

wherein the first touch sensor circuit comprises a plurality of conductive lines arranged along a first direction, and the second touch sensor circuit comprises a plurality of conductive lines

arranged along a second direction, wherein the second direction is different from the first direction;

an insulating layer arranged between the first touch sensor circuit and the second touch sensor circuit; and

an equivalent switch arranged between the first touch sensor circuit and the second touch sensor circuit, wherein the first touch sensor circuit and the second touch sensor circuit form the touch sensor circuit, in a case that the equivalent switch is off; and

the first touch sensor circuit and the second touch sensor circuit form an equivalent coil and two ends of the equivalent coil are connected to a rechargeable power supply to generate an induced current for charging the rechargeable power supply, in a case that the equivalent switch is on.

6. The electronic device according to claim 5, wherein an end of the equivalent switch is connected with a first lead led out from a first region of the first touch sensor circuit, another end of the equivalent switch is connected with a second lead led out from a second region of the second touch sensor circuit, and the insulating layer is arranged between the first region and the second region;

and

the first region is overlapped with the second region overlap, in a planar circuit diagram of the touch sensor circuit formed by the first touch sensor circuit and the second touch sensor circuit.

7. The electronic device according to claim 6, wherein the equivalent switch is a controller chip, the first lead and the second lead are connected to the controller chip, and the controller chip is adapted to control the first lead and the second lead to be connected or disconnected.

8. The electronic device according to claim 7, wherein the controller chip is further adapted to control the first lead and the second lead to be connected, in a case that the electronic device is in a standby state, or in a case that a parameter of an external electric field of the electronic device is larger than a threshold.

9. A wireless charging method using the electronic device according to claim 5, comprising:

obtaining state information of the electronic device;

determining whether a preset condition is met, according to the state information, to obtain a determined result; and

controlling the equivalent switch to be on, in a case that the determined result indicates that the preset condition is met.

10. The method according to claim 9, wherein:

the obtaining state information of the electronic device comprises;

obtaining system state information of the electronic device; and

the determining whether a preset condition is met comprises;

determining whether the electronic device is in a standby state.

11. The method according to claim 9, wherein:

the obtaining state information of the electronic device comprises;

obtaining a parameter of an external electric field of the electronic device; and

the determining whether a preset condition is met comprises;

determining whether the parameter of the external electric field is larger than a threshold.

12. The method according to claim 9, further comprising:

controlling the equivalent switch to be off, in a case that the determined result indicates that the preset condition is not met.