A method and an apparatus for pressure detection, an active pen, a touch control chip and an electrode device are provided, configured to detect a pressure of the active pen on a screen. The active pen includes a pressure sensor, a wireless communication module and a tip electrode, and the pressure sensor is configured to detect the pressure generated by the active pen. The method includes: determining a second pressure level corresponding to the pressure, according to a detection signal corresponding to a first driving signal output by the tip electrode, when a pressure signal of a first pressure level corresponding to the pressure sent by the wireless communication module is not received; and displaying handwriting of the active pen, by the screen, according to the second pressure level. The method can reduce time delay of a response of a first writing of the active pen.

Provided is an electronic apparatus including a window, a display panel disposed below the window, a digitizer disposed below the display panel and including a first surface and a second surface opposing the first surface, a first adhesive layer disposed on the first surface, and a second adhesive layer disposed below the second surface, wherein the first adhesive layer and the second adhesive layer are two-time-cured. Accordingly, an electronic apparatus having improved folding and viewability properties may be provided.

A touch sensor includes a base layer, a first electrode unit, second electrode units, and a first strain gauge. The first electrode unit includes first touch electrodes arranged on the base layer along a first direction and electrically connected to each other along the first direction. The second electrode units are spaced apart from one another along the first direction. Each of the second electrode units includes second touch electrodes arranged on the base layer along a second direction intersecting the first direction and electrically connected to each other along the second direction. Each of the second touch electrodes includes a first opening. The first strain gauge includes first resistance lines electrically connected to each other along the first direction. Each of the first resistance lines is disposed in a respective first opening disposed in a first row among the first openings.

A pressure calibration method, applicable to a touch panel which sequentially comprises a first electrode layer, an elastic dielectric layer and a second electrode layer, the first electrode layer includes multiple first electrodes in parallel to a first axis, the second electrode layer includes multiple second electrodes in parallel to a second axis, the pressure calibration method comprising: retrieving a depression event according to mutual capacitance sensing between the first electrodes and the second electrodes; finding a corresponding calibration area according to coordinate of the depression event; and calculating a calibrated pressure value according to a pressure sensing value of the depression event and a pressure calibration function of the corresponding calibration area.

According to various embodiments, disclosed is an electronic device comprising at least one sensor, a display comprising a touch panel, at least one pressure sensor disposed in the upper or lower layer of the touch panel such that pressure applied to at least a part of a region of the display can be sensed, and at least one processor, the at least one processor configured to: sense whether the electronic device is in a submerged state by using the at least one sensor or the display, receive a user input with respect to the at least a part of a region of the display while the electronic device is sensed to be in the submerged state, acquire the pressure and the position of the user input by using the at least one pressure sensor, and process the user input on the basis of the acquired pressure and the acquired position.

A haptic device for an electronic device includes an actuation member formed from a shape-memory alloy (SMA) material that changes shape (e.g., expands or contracts) in response to an applied electrical current. In some cases, the haptic devices described herein also include a restoration mechanism that restores the actuation member to its original shape or to a similar shape. The change in the shape of the actuation member and the restoration of the shape of the actuation member may produce a haptic output at the electronic device.

An electronic device includes: a base substrate including an active region, which includes a sensing region, and a peripheral region adjacent to the active region; an input sensor including a sensing insulating layer, a plurality of first sensing electrodes, a plurality of second sensing electrodes, the second sensing electrodes being spaced apart from the first sensing electrodes; and a pressure sensor including a plurality of strain sensing patterns overlapping the sensing region, and strain connection patterns connecting the strain sensing patterns to each other, wherein each of the first sensing electrodes comprises a plurality of first sensing patterns overlapping the active region, each of the second sensing electrodes comprises a plurality of second sensing patterns overlapping the active region and on a same layer as the first sensing patterns, and a plurality of second connection patterns connecting the second sensing patterns.

An electronic device includes a display layer, a sensor layer disposed on the display layer, and a lower member that is disposed under the display layer and includes a first shielding layer. The sensor layer operates in a first touch mode for sensing a first input based on a capacitance change and a second touch mode for sensing a second input of an input device that is configured to emit a magnetic field, and the first shielding layer shields the magnetic field that is transmitted through the sensor layer.

A display device includes a display panel, an input sensor having a plurality of first sensing electrodes and a plurality of second sensing electrodes, and a readout circuit that includes a noise filter electrically connected to the plurality of first sensing electrodes and the plurality of second sensing electrodes to remove noise of a receiving signal received from the plurality of first sensing electrodes and the plurality of second sensing electrodes. The readout circuit determines which of the first sensing electrodes are influenced by a touch based on the receiving signal as influenced electrodes, during a first sensing mode. The readout circuit adjusts a passband of the noise filter based on the number of influenced electrode and transmits a transmitting signal to the influenced electrodes, during a second sensing mode.

Apparatus and methods of impedance sensing are described. One method includes performing a first digital conversion of an attribute of a sensor electrode and performing a second digital conversion of the attribute of the sensor electrode. The second digital conversion differs by at least one characteristic from the first digital conversion. The method further includes calculating a resistance of the sensor electrode from a first and second digital value of the first and second digital conversions, respectively; and calculating a capacitance of the sensor electrode from the first and second digital value of the first and second digital conversions, respectively.