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US 10,761,619 B2Granted
Touch-sensing system, display device, active pen, and pen recognition method
AssigneeLG Display Co., Ltd.
InventorHyunkyu Park
Life of this patent
Estimating the term…
Abstract
Disclosed are a touch-sensing system, a display device, an active pen, and a pen recognition method which can perform rapid and accurate pen recognition as the active pen provides pen identification information to the display device through a predetermined path, and which can also simultaneously process pen inputs through many active pens by distinguishably recognizing the many pens.
Claims19
A touch-sensing system comprising:
- an active pen;
- and
- a display device including a panel, on which a plurality of touch electrodes are arranged, and which is configured to perform pen recognition processing based on a link with the active pen,
- wherein the active pen is configured to:
- radiate a pen pulse signal indicating pen identification information to the panel through a pen tip, and
- wirelessly transmit pen data and pen identification information through an embedded pen wireless communication unit,
- the display device includes:
- a touch-sensing circuit configured to supply a first panel-driving pulse signal to the panel and output raw data read from the panel to which the pen pulse signal is radiated;
- a wireless communication module configured to receive and output the pen data and the pen identification information wirelessly transmitted from the active pen;
- and
- a touch controller configured to acquire the pen identification information from the raw data output from the touch-sensing circuit and perform pen recognition processing based on the acquired pen identification information, and the pen data and the pen identification information output from the wireless communication module,
- wherein the pen pulse signal is a signal for detecting a location of the active pen, and is output from the pen tip of the active pen and applied to at least one touch electrode of the panel of the display device,
- the pen data is not related to the location detection of the active pen and includes at least one additional pen information, the pen data is wirelessly transmitted from the active pen to the wireless communication module of the display device, and
- the pen identification information is applied to the at least one touch electrode of the panel of the display device through the pen pulse signal and subsequently wirelessly transmitted from the active pen to the wireless communication module of the display device,
- wherein while the first panel-driving pulse signal is applied to the at least one touch electrode of the panel, a first signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of data lines of the panel or a second signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of gate lines of the panel, and
- wherein the first signal or the second signal is in phase with the first panel-driving pulse signal.
13 more elements
A display device configured to perform pen recognition processing based on a link with an active pen, the display device comprising:
- a panel on which a plurality of touch electrodes are arranged;
- a touch-sensing circuit configured to:
- supply a first panel-driving pulse signal, and
- output raw data generated by reading a pen pulse signal, which is radiated from the active pen to the panel and indicates pen identification information through the panel;
- a wireless communication module configured to receive and output pen data and the pen identification information wirelessly transmitted from the active pen;
- and
- a touch controller configured to acquire the pen identification information from the raw data output from the touch-sensing circuit and perform pen recognition processing based on the acquired pen identification information, and the pen data and the pen identification information output from the wireless communication module,
- wherein the pen pulse signal is a signal for detecting a location of the active pen, and is output from a pen tip of the active pen and applied to at least one touch electrode of the panel of the display device,
- the pen data is not related to the location detection of the active pen and includes at least one additional pen information, the pen data is wirelessly transmitted from the active pen to the wireless communication module of the display device, and
- the pen identification information is applied to the at least one touch electrode of the panel of the display device through the pen pulse signal and subsequently wirelessly transmitted from the active pen to the wireless communication module of the display device,
- wherein while the first panel-driving pulse signal is applied to the at least one touch electrode of the panel, a first signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of data lines of the panel or a second signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of gate lines of the panel, and
- wherein the first signal or the second signal is in phase to the first panel-driving pulse signal.
9 more elements
A panel included in a display device linking with an active pen, the panel comprising:
- a plurality of data lines arranged in a first direction;
- a plurality of gate lines arranged in a second direction;
- and
- a plurality of touch electrodes for touch sensing,
- wherein an image data signal is applied to the plurality of data lines and a gate signal is applied to the plurality of gate lines in a display-driving section,
- a touch-driving section corresponding to a blank section between two display-driving sections includes an uplink transmission section for signal transmission from the display device to the active pen and a downlink transmission section for signal transmission from the active pen to the display device,
- a pen pulse signal output from the active pen is applied to all or some of the plurality of touch electrodes during the downlink transmission section, and
- a second panel-driving pulse signal or a third panel-driving pulse signal distinguished from a first panel-driving pulse signal is outputted from a touch-sensing circuit in the display device, the second panel-driving pulse signal or the third panel-driving pulse signal are applied to all or some of the plurality of touch electrodes and delivered to the active pen during the uplink transmission section, the first panel-driving pulse signal is outputted from a touch-sensing circuit in the display device and applied to all or some of the plurality of touch electrodes and transmitted to the active pen in the downlink transmission section,
- wherein while the first panel-driving pulse signal is applied to at least one touch electrode of the panel, a first signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of data lines of the panel or a second signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of gate lines of the panel, and
- wherein the first signal or the second signal is in phase to the first panel-driving pulse signal.
7 more elements
An active pen configured to link with a display device, the active pen comprising:
- a pen tip in contact with or in proximity to a panel of the display device;
- an analog front-end receiver configured to receive a first panel-driving pulse signal supplied to the panel through the pen tip;
- an analog front-end transmitter configured to radiate a pen pulse signal indicating pen identification information through the pen tip based on the first panel-driving pulse signal;
- and
- a pen wireless communication unit configured to wirelessly transmit pen data and the pen identification information,
- wherein the pen pulse signal is a signal for detecting a location of the active pen, and is output from a pen tip of the active pen and applied to at least one touch electrode of the panel of the display device,
- the pen data is not related to the location detection of the active pen and includes at least one additional pen information, the pen data is wirelessly transmitted from the active pen to a wireless communication module of the display device, and
- the pen identification information is applied to the at least one touch electrode of the panel of the display device through the pen pulse signal and subsequently wirelessly transmitted from the active pen to the wireless communication module of the display device,
- wherein while the first panel-driving pulse signal is applied to the at least one touch electrode of the panel, a first signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of data lines of the panel or a second signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of gate lines of the panel, and
- wherein the first signal or the second signal is in phase to the first panel-driving pulse signal.
7 more elements
A pen recognition method performed through a link with an active pen of a display device, the pen recognition method comprising:
- supplying a first panel-driving pulse signal to a panel by the display device;
- radiating a pen pulse signal indicating pen identification information to the panel through a pen tip based on the first panel-driving pulse signal and wirelessly transmitting pen data and pen identification information by the active pen;
- and
- performing pen recognition processing based on raw data generated by being read from the panel, to which the pen pulse signal is radiated, and the pen data and the pen identification information wirelessly transmitted from the active pen by the display device,
- wherein the pen pulse signal is a signal for detecting a location of the active pen, and is output from the pen tip of the active pen and applied to at least one touch electrode of the panel of the display device,
- the pen data is not related to the location detection of the active pen and includes at least one additional pen information, the pen data is wirelessly transmitted from the active pen to a wireless communication module of the display device, and
- the pen identification information is applied to the at least one touch electrode of the panel of the display device through the pen pulse signal and subsequently wirelessly transmitted from the active pen to the wireless communication module of the display device,
- wherein while the first panel-driving pulse signal is applied to the at least one touch electrode of the panel, a first signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of data lines of the panel or a second signal corresponding to the first panel-driving pulse signal is applied to all or some of a plurality of gate lines of the panel, and
- wherein the first signal or the second signal is in phase to the first panel-driving pulse signal.
6 more elements
Dependencies are inferred from the claim text.