公开(公告)号：US10228786B2

公开(公告)日：2019-03-12

申请号：US14915152

申请日：2014-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Kihyun Jung ,  Hyunjai Shim ,  Jungjoon Lee ,  Masashi Hashimoto ,  Jinho Choi ,  Jeongkyo Seo ,  Younghwan Kim

IPC: G06F3/041 ,  G06F3/0488 ,  G06F3/01 ,  G06F3/0484 ,  G06F3/0354 ,  G06F3/044

Abstract: A mobile terminal having a stylus pen and a touch panel is provided. The mobile terminal includes a touch panel having a plurality of touch panel electrodes, and a stylus pen provided to transmit and receive an electrical signal to and from the touch panel using capacitive coupling, wherein the stylus pen includes a main body, a pen tip formed of a conductor and protruding to outside of the main body to apply a touch to the touch panel, and an LC circuit provided within the main body, configured to include an inductor and a capacitor, and electrically connected to the pen tip to generate capacitive coupling between the LC circuit an the touch panel.

公开(公告)号：US10310640B2

公开(公告)日：2019-06-04

申请号：US15548249

申请日：2015-06-18

Applicant: LG ELECTRONICS INC.

Inventor： Jungjoon Lee ,  Masashi Hashimoto ,  Hyunjai Shim ,  Younghwan Kim

IPC: G06F3/038 ,  G06F3/0354 ,  G06F3/041 ,  G06F3/044

Abstract: A mobile terminal including a touch panel including a plurality of touch panel electrodes; a stylus pen configured to perform transmission and reception of an electric signal with the touch panel using capacitive coupling and without using a separate power supply to the stylus pen; and a controller configured to, when the electric signal is received from the stylus pen through the capacitive coupling, detect a location of the stylus pen with respect to the touch panel based on signal magnitudes of at least two touch panel electrodes from which the electrical signal is detected.

公开(公告)号：US10037102B2

公开(公告)日：2018-07-31

申请号：US14915007

申请日：2014-08-25

Applicant: LG ELECTRONICS INC.

Inventor： Masashi Hashimoto

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354

CPC classification number: G06F3/0416 ,  G06F3/03545 ,  G06F3/044

Abstract: A touch panel includes an electrostatic sensor unit in which a plurality of TX lines and RX lines intersect with each other to detect a touch position electrostatically, and a power supply unit configured to selectively apply an AC voltage to the TX lines and the RX lines to induce capacitive coupling between an external LC circuit and the electrostatic sensor unit.