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US 11,182,012 B2Granted
Display device and portable device having the same
AssigneeSamsung Display Co., Ltd.
InventorsSanghyun Heo, Chul Kim
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a display device. The display device includes a display module and a sensing circuit board including a plurality of sensing dots disposed on the display module and generating a magnetic field. Each of the sensing dots includes continuous first and second periods. Additionally or alternatively, the sensing dots includes a transmitter, a driver, a charger, and an outputter. The transmitter transmits a reference alternating current signal. The driver is connected to the transmitter and a sensing node and outputs a node current signal. The charger is connected to the sensing node and generates a magnetic field. The outputter is electrically connected to an output terminal and outputs a sensing signal.
Claims20
A display device comprising:
- a display module;
- and
- a sensing circuit board comprising a plurality of sensing dots disposed on the display module and configured to generate a magnetic field, wherein the sensing circuit board is configured to operate each of the sensing dots according to a first period and a second period, and wherein the sensing circuit board further comprises:
- a transmitter configured to transmit a reference alternating current signal during the first period in response to an active level of a first selection signal;
- a driver connected to the transmitter and a sensing node and configured to output a node current signal to the sensing node in response to the reference alternating current signal transmitted through the transmitter during the first period;
- a charger connected to the sensing node and configured to generate the magnetic field in response to the node current signal;
- and
- an outputter configured to be electrically connected to an output terminal in response to an active level of a second selection signal having a phase inverted with respect to the first selection signal during the second period, wherein the outputter is further configured to output a sensing signal to the output terminal in response to a level of the sensing node.
5 more elements
A display device comprising:
- a display module;
- and
- a sensing circuit board comprising a plurality of sensing dots disposed on the display module and configured to generating a magnetic field, each of the sensing dots comprising:
- a first control transistor comprising a first control electrode and a first electrode, which are connected to a reference terminal configured to output a reference alternating current signal, and a second electrode connected to a power terminal;
- a second control transistor comprising a second control electrode configured to receive a first selection signal, a third electrode connected to the first control electrode, and a fourth electrode;
- a driving transistor comprising a driving control electrode connected to the fourth electrode, a first driving electrode connected to the power terminal, and a second driving electrode connected to a sensing node;
- an inductor comprising an one end connected to the sensing node and another end connected to a bias terminal and configured to output a bias voltage;
- a first output transistor comprising a first output control electrode connected to the sensing node, a first output electrode connected to the power terminal, and a second output electrode;
- and
- a second output transistor comprising a second output control electrode configured to receive a second selection signal having a phase inverted with respect to the first selection signal, a third output electrode connected to the second output electrode, and a fourth output electrode connected to an output terminal.
7 more elements
A portable device comprising:
- a display device;
- and
- an electronic module selecting information displayed through the display device, the display device comprising:
- a display module;
- and
- a sensing circuit board comprising a plurality of sensing dots configured to generate a magnetic field with the electronic module, wherein each of the sensing dots is configured to operate according to continuous first and second periods, the sensing circuit board further comprising:
- a transmitter configured to transmit a reference alternating current signal during the first period in response to an active level of a first selection signal;
- a driver connected to the transmitter and a sensing node and configured to output a node current signal to the sensing node in response to the reference alternating current signal transmitted through the transmitter during the first period;
- a charger connected to the sensing node and configured to generate the magnetic field in response to the node current signal;
- and
- an outputter configured to be electrically connected to an output terminal in response to an active level of a second selection signal having a phase inverted with respect to the first selection signal during the second period and configured to output a sensing signal to the output terminal in response to a level of the sensing node.
8 more elements
Dependencies are inferred from the claim text.