Provided are a touch sensing unit and a display device including the same. The touch sensing unit includes a substrate including glass or a polymer resin, and a sensor electrode layer including sensor electrodes and sensor lines disposed on the substrate and a sensor insulating film configured to cover the sensor electrodes and the sensor lines. The sensor electrodes emit an electromagnetic wave according to transmission signals of the sensor lines. The sensor electrodes transmit reception signals to the sensor lines according to the electromagnetic wave received from the outside. The electromagnetic wave has a frequency of 10 GHz to 100 GHz.

An electronic device including a bonding layer in contact with an active area of a digitizer may include: the digitizer, a main magnet attached to a surface of the digitizer, a flexible printed circuit board electrically connected to the digitizer, and a bonding layer connecting the digitizer and the flexible printed circuit board, wherein the flexible printed circuit board includes a base part overlapping the bonding layer with respect to a stacking direction of the digitizer, the flexible printed circuit board, and the bonding layer, and extension parts extending toward the main magnet from the base part.

An electronic device including a bonding layer in contact with an active area of a digitizer may include: the digitizer, a main magnet attached to a surface of the digitizer, a flexible printed circuit board electrically connected to the digitizer, and a bonding layer connecting the digitizer and the flexible printed circuit board, wherein the flexible printed circuit board includes a base part overlapping the bonding layer with respect to a stacking direction of the digitizer, the flexible printed circuit board, and the bonding layer, and extension parts extending toward the main magnet from the base part.

A device with touch sensing. The device includes a first sensor configured to detect a touch and to provide a first sensing signal, a second sensor configured to detect another touch and to provide a second sensing signal, a threshold generator configured to set a first threshold by a reflecting of an amount of change of the second sensing signal to an initial threshold, and a sensor circuit configured to generate a first differential signal based on the first sensing signal, and to determine a first touch based on a consideration of the first threshold with respect to a first signal generated based on the first differential signal and the first sensing signal.

According to certain embodiments, a foldable electronic device comprises: a flexible display; a first housing in which a first region of the flexible display is positioned; a second housing in which a second region of the flexible display is positioned; a hinge structure interposed between the first housing and the second housing and forming a folding axis; a sensor panel interposed between the flexible display and each of the first housing and the second housing, the sensor panel configured to identify input information of a stylus pen, and including a plurality of first vertical channels interposed the first housing and the first region of the flexible display and a plurality of second vertical channels disposed between the second housing and the second region of the flexible display; and a processor configured to control the sensor panel, wherein the processor is configured to: detect whether the foldable electronic device is folded; when the foldable electronic device is folded, transmit a deviation detection signal to at least one of the plurality of first vertical channels and receive the deviation detection signal through at least one of the plurality of second vertical channels; and correct the input information of the stylus pen using a compensation value corresponding to the received deviation detection signal.

An electronic device according to an embodiment of the disclosure may include a housing, a key cover that penetrates at least a part of the housing and exposes at least a part of the key cover to an outside, a key button that is disposed inside the key cover and generates a pressing signal when the key button is pressed, a pressure sensor including a plurality of depressurization points between the key cover and the key button, and at least one processor electrically connected to the pressure sensor and the key button, and the at least one processor obtains a pressure signal corresponding to each of the plurality of depressurization points through the pressure sensor, obtains the pressing signal through the key button, and performs a specified operation based on the pressure signal corresponding to each of the obtained depressurization points and the pressing signal.

The present disclosure discloses a digital electromagnetic stylus. The electromagnetic styluses include a system-on-chip unit, a transceiver unit, a first rectifier and filter unit, a second rectifier and filter unit, a pressure and key detection unit, and a transmission control unit. The system-on-chip unit, the transmission control unit, and the transceiver unit are connected in sequence. The first rectifier and filter unit and the second rectifier and filter unit are connected in parallel between the system-on-chip unit and the transceiver unit. The pressure and key detection unit is connected to the system-on-chip unit. The present discloses further provides an input system, and a method for controlling the same.

The present disclosure discloses a digital electromagnetic stylus. The electromagnetic styluses include a system-on-chip unit, a transceiver unit, a first rectifier and filter unit, a second rectifier and filter unit, a pressure and key detection unit, and a transmission control unit. The system-on-chip unit, the transmission control unit, and the transceiver unit are connected in sequence. The first rectifier and filter unit and the second rectifier and filter unit are connected in parallel between the system-on-chip unit and the transceiver unit. The pressure and key detection unit is connected to the system-on-chip unit. The present discloses further provides an input system, and a method for controlling the same.

A touch operation sensing device configured to be added to an electronic device, the electronic device including a touch member disposed in a housing and having conductivity, the touch operation sensing device includes an oscillation circuit disposed on an internal side of the touch member and including an inductor element and a capacitor element to generate an oscillation signal in response to changed impedance during a touch operation through the touch member, and an insulating member disposed between a first terminal of the inductor element and the touch member, and between a second terminal of the inductor element and the touch member.

An electronic apparatus includes a window, a display panel disposed on a lower surface of the window, and a digitizer disposed on a lower surface of the display panel. The digitizer includes a first photosensitive resin layer, a first sensing coil disposed on one surface of the first photosensitive resin layer, a second photosensitive resin layer disposed spaced apart from the first photosensitive resin layer, and a first adhesive layer disposed between the first photosensitive resin layer and the second photosensitive resin layer and which adheres the first photosensitive resin layer and the second photosensitive resin layer.