Touch panel and a wireless input apparatus and mobile terminal including touch panel

• US 10,175,736 B2
• Filed: 06/18/2014
• Issued: 01/08/2019
• Est. Priority Date: 09/23/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Younghwan
• Primary Examiner(s): Regn, Mark
• Application Number:
  US15/022,387
• Publication Number:
  US 20160224086A1
• Time in Patent Office: 1,665 Days
• Field of Search: 345173
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

There is disclosed a touch panel, a mobile terminal and a wireless input apparatus applied to the touch panel and the mobile terminal and the touch panel includes a cover unit having a touchable front surface and a rear surface opposite to the front surface, a touch sensing unit provided under the back surface to sense a preset touch signal, and magnetic field generation unit provided under edges of the touch sensing unit to generate a magnetic field.

Claims

1. A mobile terminal comprising:

a touch panel comprising a magnetic field generation unit and a touch sensing unit,

wherein the magnetic field generation unit comprises a loop coil which is provided in an edge of the touch panel, and the magnetic field generation unit is configured to generate a wireless power using a magnetic field with a specific resonance frequency, and provide the wireless power to a wireless input apparatus,

wherein the touch sensing unit is configured to sense a signal output from the wireless input apparatus; and

a controller configured to;

receive a charging-related information from the wireless input apparatus,

determine whether to transmit the wireless power to the wireless input apparatus through the magnetic field generation unit based on the received charging-related information, and

control the magnetic field generation unit to transmit the wireless power having the specific resonance frequency,

wherein the touch sensing unit comprises an electrode unit located in a first sensing region and a trace unit located in a second sensing region,

wherein the second sensing region locates outside the first sensing region,

wherein the loop coil senses a touch signal together with the electrode unit, and

wherein the loop coil is used as a transmission electrode and the electrode unit located in the first sensing region is used as a reception electrode.

2. The mobile terminal of claim 1, wherein the magnetic field generation unit is provided under an edge of the touch sensing unit.

3. The mobile terminal of claim 1, wherein the controller determines presence of contact between the touch panel and the wireless input apparatus, and a pressure applied to a front end of the wireless input apparatus based on an interval of the sensed signal.

4. The mobile terminal of claim 1, wherein the controller determines a location of the wireless input apparatus on the touch panel, using a size of the sensed signal.

5. The mobile terminal of claim 1, wherein the electrode unit comprises a first electrode unit having a first pattern and a second electrode unit having a second pattern.

6. The mobile terminal of claim 5, wherein the trace unit comprises a first trace unit connected to the first electrode unit and a second trace unit.