CONTROL METHOD FOR TOUCH PANEL

• US 20150070297A1
• Filed: 12/07/2013
• Published: 03/12/2015
• Est. Priority Date: 09/09/2013
• Status: Abandoned Application

• Current Assignee: Waltop International Corp.
• Original Assignee: Waltop International Corp.
• Inventors: YEH, CHIA-JUI, MAO, CHUNG-FUU
• Application Number:
  US14/099,934
• Publication Number:
  US 20150070297A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• 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 3/0443 using a single layer of sensing electrodes
• 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 3/046 by electromagnetic means

Abstract

A control method for a touch panel is disclosed. First of all, a step of detecting an electromagnetic and capacitive pen is performed. Next a step of detecting a conductive indicator is undertaken, followed by a step of detecting a signal value of the conductive indicator being performed. A step of determining whether the signal value is over a threshold value is then performed to determine whether a first or a second touch control modes. The touch panel has electromagnetic sensitive and capacitive touch control functions.

Claims

1. A control method for a touch panel, comprising:

detecting an electromagnetic and capacitive pen;

detecting a conductive indicator;

detecting a signal value of the conductive indicator; and

determining whether the signal value is over a threshold value to determine whether a first or a second touch control modes is performed, wherein the touch panel has electromagnetic sensitive and a capacitive touch control functions.

2. The control method according to claim 1, wherein the touch panel comprises a capacitive type sensor layer, at least one sensor coil on a transparent substrate, the capacitive type sensor layer comprises a plurality of detection electrodes, and the sensor coil is located on the peripheral area of the transparent substrate around the capacitive type sensor layer.

3. The control method according to claim 1, wherein the electromagnetic and capacitive pen comprises a conductive pin which can form a conductive path with a user'"'"'s hand holding the electromagnetic and capacitive pen.

4. The control method according to claim 1, wherein the first touch control mode comprises a single (dual) touch control mode, and the second touch control mode comprises a multi-touch control mode.

5. The control method according to claim 4, wherein if the electromagnetic and capacitive pen exists, then the first touch control mode is performed.

6. The control method according to claim 4, wherein if the signal value is not over the threshold value, then the first touch control mode is performed.

7. The control method according to claim 4, wherein if the signal value is over the threshold value, then the second touch control mode is performed.

8. The control method according to claim 4, wherein the first touch control mode uses a self capacitance mode to calculate capacitance variation.

9. The control method according to claim 4, wherein the second touch control mode uses a mutual capacitance mode to calculate capacitance variation.

10. The control method according to claim 1, wherein if the conductive indicator does not exist, then the step of detecting an electromagnetic and capacitive pen is performed again.