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US 2019/0102021 A1Published application
Touch display device, touch circuit, pen, touch system, and multi-pen sensing method
AssigneeLG Display Co., Ltd.
InventorsHyungUk JANG, SeungSeok OH, SangHyuck BAE, Sungsu HAN, Suyun JU, DoYoung JUNG
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Abstract
Disclosed are a touch display device, a touch circuit, a pen, a touch system, and a multi-pen sensing method for receiving downlink signals output from two or more pens through one or more touch electrodes on a panel and distinguishably sensing the two or more pens based on unique information of the received downlink signals.
Claims20
A touch circuit comprising:
- a first circuit configured to receive a downlink signal output from each of two or more pens through a panel;
- and
- a second circuit configured to sense the two or more pens such that touches of the two or more pens are distinguished based on unique information of the received downlink signal.
A touch display device comprising:
- a panel on which a plurality of touch electrodes is arranged;
- and
- a touch circuit configured to receive a downlink signal output from each of two or more pens through one or more touch electrodes of the panel and sense the two or more pens such that the two or more pens are distinguished from each other based on unique information of the received downlink signal.
A pen configured to link with a touch display device, comprising:
- one or more pen tips configured to be brought in contact with or in proximity to a panel of the touch display device;
- a receiver configured to receive an uplink signal applied to the panel through the one or more pen tips;
- a transmitter configured to output a downlink signal to the panel through the one or more pen tips;
- and
- a case accommodating the one or more pen tips, the receiver, and the transmitter,
- wherein the downlink signal is a signal defined by a protocol between the panel and the pen, is output in response to the uplink signal, and has unique information of the pen.
3 more elements
A multi-pen sensing method, the multi-pen sensing method comprising:
- transmitting an uplink signal to two or more pens through one or more touch electrodes within a panel;
- receiving a downlink signal output from each of the two or more pens through the one or more touch electrodes within the panel;
- and
- sensing the two or more pens such that the pens are distinguished based on unique information of the downlink signal output from each of the two or more pens.
1 more element
Dependencies are inferred from the claim text.