Touch sensing system and method for driving the same
AssigneeLG Display Co., Ltd.
InventorsDongjo Park, Sojung Jung
Life of this patent
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Abstract
A touch sensing system includes a pen including a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, an antenna surrounding the XY electrodes, and a first touch driving circuit which transmits a resonant inductive signal to the pen through electric coupling and to receive a resonance signal from the pen through the antenna.
Claims15
A touch sensing system comprising:
- a pen including a resonant circuit embedded therein;
- XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes;
- an antenna that surrounds the XY electrodes;
- and
- a first touch driving circuit configured to transmit a resonant inductive signal to the pen through electric coupling and to receive a resonance signal from the pen through the antenna.
A method for driving a touch sensing system including a pen including a resonant circuit embedded therein, XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes, and an antenna surrounding the XY electrodes, the method comprising:
- generating a resonant inductive signal of the pen;
- transmitting the resonant inductive signal to the pen through electric coupling;
- receiving a resonance signal from the pen through the antenna;
- and
- analyzing a received signal of the antenna to estimate a location and a pen pressure of the pen.
A user interface comprising:
- a display;
- a touch sensing system comprising:
- a pen including a resonant circuit embedded therein;
- XY electrodes including X electrodes and Y electrodes perpendicular to the X electrodes;
- an antenna that surrounds the XY electrodes;
- and
- a first touch driving circuit configured to transmit a resonant inductive signal to the pen through electric coupling and to receive a resonance signal from the pen through the antenna;
- a processor and memory configured to analyze a received signal of the antenna to estimate a location and a pen pressure of the pen on the display.
Dependencies are inferred from the claim text.