Abstract: A pressure sensing unit is provided. The pressure sensing unit includes a membrane and a pressure sensing pad group. The membrane has a first surface and a second surface. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane. Therefore, a signal-to-noise ratio can be increased and an erroneous detection can be prevented.

Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.

Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.

Abstract: A pressure sensing unit is provided. The pressure sensing unit includes a membrane and a pressure sensing pad group. The membrane has a first surface and a second surface. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane.

Abstract: A pressure sensing unit, a capacitive hybrid sensor device, and an input apparatus using the same are provided. The pressure sensing unit for detecting pressing events includes a pressure sensing pad group and a floating conductive element. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The first and second pressure sensing pads are electrically shielded from each other by the ground pad. One among the floating conductive element and the pressure sensing pad group is configured to be movable in a movement direction relative to another one among the floating conductive element and the pressure sensing pad group. The floating conductive element overlaps with the pressure sensing pad group in the movement direction. Therefore, a signal-to-noise ratio can be increased and an erroneous detection can be prevented.

Abstract: A frame assembly includes a carrier and a frame. The carrier includes a bottom wall, and inner and outer side walls. The bottom wall is formed with an opening. The inner side wall is located in the opening. The inner and outer side walls extend from the bottom wall along an upright direction. The inner and outer side walls respectively include first inner and outer engaging structures. The outer side wall is spaced from the inner side wall. The frame includes a frame body, and inner and outer lateral walls. The inner and outer lateral walls extend from the frame body and respectively include second inner and outer engaging structures. The outer lateral wall is spaced from the inner lateral wall. The first and second inner engaging structures are engaged with each other, and the first and second outer engaging structures are engaged with each other.

Abstract: A capacitive touchpad is provided, which includes a substrate module, a plurality of sensing electrodes, a plurality of driving electrodes and a plurality of light-emitting diode (LED) dies. The plurality of sensing electrodes and the plurality of driving electrodes form a touch sensing region of the capacitive touchpad, and the touch sensing region is divided into a plurality of sensing units having same areas. Each of the LED dies is arranged in two adjacent ones of the plurality of sensing units, and a position of each of the LED dies corresponds to one of the plurality of driving electrodes, and the LED dies are electrically isolated from the plurality of sensing electrodes and the plurality of driving electrodes.

Abstract: A key unit and a keyboard using the same are provided. The key unit includes a circuit board, a supporting assembly, a keycap, and a floating conductive structure. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes which are spaced apart from each other. The supporting assembly is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The supporting assembly disposed between the keycap and the circuit board allows the keycap to be moved between a non-depressed position and a depressed position with respect to the circuit board. The floating conductive structure is disposed on the supporting assembly, and an orthogonal projection of the floating conductive structure on the circuit board overlaps with the pair of sensor electrodes.

Abstract: A pressure sensing unit, a capacitive hybrid sensor device, and an input apparatus using the same are provided. The pressure sensing unit for detecting pressing events includes a pressure sensing pad group and a floating conductive element. The pressure sensing pad group includes a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another. The first pressure sensing pad and the second pressure sensing pad are electrically shielded from each other by the ground pad. One of the floating conductive element and the pressure sensing pad group is configured to be movable in a movement direction relative to another one of the floating conductive element and the pressure sensing pad group. The floating conductive element overlaps with the pressure sensing pad group in the movement direction.

Abstract: A touch sensor and a keyboard using the same are provided. The touch sensor includes a plurality of main sensor structures and a plurality of resilient structures. Any two adjacent ones of the main sensor structures have a gap therebetween. Each of the resilient structures is connected between two adjacent ones of the main sensor structures, and each of the resilient structures has a cross-sectional width that is less than a width of the gap.

Abstract: A key unit and a keyboard using the same are provided. The key unit includes a circuit board, an elastic element, a keycap, and a processing circuit. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes. The elastic element is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The elastic element is disposed between the keycap and the circuit board so that the keycap moves between a non-depressed position and a depressed position with respect to the circuit board. The processing circuit is electrically connected to the pair of sensor electrodes to obtain a variation of a coupling capacitance between the pair of sensor electrodes and to determine whether the keycap is touched or depressed according to the variation of coupling capacitance.

Abstract: A touch sensor and a keyboard using the same are provided. The touch sensor includes a plurality of main sensor structures and a plurality of resilient structures. Any two adjacent ones of the main sensor structures have a gap therebetween. Each of the resilient structures is connected between two adjacent ones of the main sensor structures, and each of the resilient structures has a cross-sectional width that is less than a width of the gap.

Abstract: A frame assembly includes a carrier and a frame. The carrier includes a bottom wall, and inner and outer side walls. The bottom wall is formed with an opening. The inner side wall is located in the opening. The inner and outer side walls extend from the bottom wall along an upright direction. The inner and outer side walls respectively include first inner and outer engaging structures. The outer side wall is spaced from the inner side wall. The frame includes a frame body, and inner and outer lateral walls. The inner and outer lateral walls extend from the frame body and respectively include second inner and outer engaging structures. The outer lateral wall is spaced from the inner lateral wall. The first and second inner engaging structures are engaged with each other, and the first and second outer engaging structures are engaged with each other.

Abstract: A touch detection circuit and a touch detection method are provided. The touch circuit coupled to touch areas of touch panel includes a touch controller and a detection circuit. The touch controller performs a touch detection on the touch areas sequentially. The detection circuit transmits a first detection signal to a boundary area of the touch areas which are not touch detected to receive a first feedback signal. The detection circuit transmits a second detection signal to a corresponding central area of the touch areas which are not touch detected to receive a second feedback signal. The touch controller compares the first feedback signal and the second feedback signal to generate a capacitance variation between the boundary area and the corresponding central area.

Abstract: A key unit and a keyboard using the same are provided. The key unit includes a circuit board, an elastic element, a keycap, and a processing circuit. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes. The elastic element is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The elastic element is disposed between the keycap and the circuit board so that the keycap moves between a non-depressed position and a depressed position with respect to the circuit board. The processing circuit is electrically connected to the pair of sensor electrodes to obtain a variation of a coupling capacitance between the pair of sensor electrodes and to determine whether the keycap is touched or depressed according to the variation of coupling capacitance.

Abstract: A wearable electronic device with a function of detecting a wearing state, comprising: a plurality of electrodes; a capacitance calculating circuit, coupled to the electrodes, configured to calculate capacitance variations generated by at least two of the electrode; and a wearing state determining circuit, coupled to the capacitance calculating circuit, configured to determine the wearing state according to the capacitance variations. The wearing state determining circuit determines that the user wears the wearable electronic device in a proper manner if the capacitance variations indicate at least two of the electrodes indicate the user touches wearing state determining circuit. By this way, the wearing state can be auto detected and the wearable electronic device can be correspondingly control according to the wearing state.

Abstract: A touch keyboard includes a key set, a capacitive touch sensor, and a pressure sensing circuit. The capacitive touch sensor is coupled to the key set and is configured to generate a sensing capacitance. The pressure sensing circuit is coupled to the capacitive touch sensor, configured to generate a pressure sensing value, and specifically includes a cancellation circuit. The cancellation circuit is configured to generate a cancellation signal, and enable a capacitor voltage converter in the pressure sensing circuit to output an analog voltage signal according to the sensing signal being added with the cancellation signal, and the content of the sensing signal is the sensing capacitance generated by the capacitive touch sensor.

Abstract: A wearable electronic device with a function of detecting a wearing state, comprising: at least one electrode; a capacitance calculating circuit, coupled to the electrode, configured to calculate a capacitance variation generated by at least one of the electrode; and a wearing state determining circuit, coupled to the capacitance calculating circuit, configured to determine the wearing state according to the capacitance variation. By this way, the wearing state can be auto detected and the wearable electronic device can be correspondingly control according to the wearing state.

Abstract: A wearable electronic device with a function of detecting a wearing state, comprising: at least one electrode; a capacitance calculating circuit, coupled to the electrode, configured to calculate a capacitance variation generated by at least one of the electrode; and a wearing state determining circuit, coupled to the capacitance calculating circuit, configured to determine the wearing state according to the capacitance variation. By this way, the wearing state can be auto detected and the wearable electronic device can be correspondingly control according to the wearing state.

Abstract: A capacitive touch system including a drive end, a capacitive touch sensing device and a detection end is provided. The drive end inputs a modulated drive signal into an input channel of the capacitive sensing device, wherein the modulated drive signal includes a plurality of driving frequencies. The detection end detects a detection signal of an output channel of the capacitive sensing device and generates a two-dimensional detection vector corresponding to each of the driving frequencies. The capacitive touch system includes a touch panel or a touch keyboard.