摘要:
Provided is a display device with a touch sensor that can avoid the influence of noise originating from the polarity inversion of a common voltage of the display device without using special circuitry. The display device with a touch sensor includes a sensor output readout circuit (21) that is sequentially connected to multiple sensor electrodes in a touch sensor unit (7) and outputs signal voltages that correspond to the electrical characteristics of the electrodes, a sensor control circuit (23) that supplies a control signal to the sensor output readout circuit (21), and a coordinate computation circuit (22) that detects a contact position based on the signal voltages. The sensor control circuit (23) causes a scan operation, in which the sensor output readout circuit (21) is sequentially connected to all of the sensor electrodes of the touch sensor unit (7) and outputs the signal voltages, to start after the common voltage has switched from a first polarity to a second polarity, and to end before the common voltage returns to the first polarity.
摘要:
Provided is a display device with a touch sensor that can avoid the influence of noise originating from the polarity inversion of a common voltage of the display device without using special circuitry. The display device with a touch sensor includes a sensor output readout circuit (21) that is sequentially connected to multiple sensor electrodes in a touch sensor unit (7) and outputs signal voltages that correspond to the electrical characteristics of the electrodes, a sensor control circuit (23) that supplies a control signal to the sensor output readout circuit (21), and a coordinate computation circuit (22) that detects a contact position based on the signal voltages. The sensor control circuit (23) causes a scan operation, in which the sensor output readout circuit (21) is sequentially connected to all of the sensor electrodes of the touch sensor unit (7) and outputs the signal voltages, to start after the common voltage has switched from a first polarity to a second polarity, and to end before the common voltage returns to the first polarity.
摘要:
Provided is a touch-sensor-equipped display device that is capable of avoiding influences of noises resulting from polarity inversion of a common voltage of the display device, without using a special circuit. It is a touch-sensor-equipped display device that includes: a sensor output readout circuit (21) that is connected to a plurality of sensor electrodes of a touch sensor part (7) successively, and that outputs a signal voltage corresponding to electric characteristics of the connected sensor electrode; a sensor control circuit (23) that supplies a control signal to the sensor output readout circuit (21); and a coordinate calculation circuit (22) that detects a contact position, based on the signal voltage. The sensor control circuit (23) performs a scanning operation for obtaining full-screen sensor data in such a manner that the scanning operation is divided into a plurality of parts. The coordinate calculation circuit (22) includes: a sensor output synthesis circuit (221) that synthesizes the sensor data obtained by the plurality of divided parts of the scanning operation so as to generate full-screen sensor data; and a coordinate position detection circuit (222) that detects the position of the contact by the touching object, based on full-screen sensor data.
摘要:
A touch panel control circuit includes a switch signal generation circuit, a touch panel drive signal generation circuit that generates a touch panel drive signal, and a synchronizing signal generation circuit. The switch signal generation circuit generates a switch signal corresponding to a generation timing of the touch panel drive signal. The switch signal specifies a switching period during which a switching liquid crystal drive signal driving a switching liquid crystal panel is switched to a touch panel drive signal and supplied to a common board that is commonly used for a touch panel and a switching liquid crystal panel. The synchronizing signal generation circuit generates a synchronizing signal that starts switching from the switching liquid crystal drive signal to the touch panel drive signal at a predetermined period.
摘要:
In order to provide a touch sensor-equipped display device that is not susceptible to the effect of noise caused by a polarity reversal in a common voltage of a display device without using special circuitry, the disclosed touch sensor-equipped display device is provided with: a sensor output read circuit 21 that is sequentially connected to a plurality of sensor electrodes of a touch sensor part 7 and that outputs a signal voltage according to the electrical properties of each electrode; a sensor control circuit 23 that supplies a control signal to the sensor output read circuit 21; and a coordinate calculation circuit 22 that detects a contact position on the basis of the signal voltage. The coordinate calculation circuit 22 is provided with: an averaging circuit 221 that calculates the average values of signal voltage values obtained during a scan that was started in synchronization with a horizontal synchronization signal when the common voltage is reversed from positive polarity to negative polarity, and the signal voltage values obtained during a scan that was started in synchronization with a horizontal synchronization signal when the common voltage is reversed from negative polarity to positive polarity; and a contact position detection circuit 222 that detects the contact position on the basis of the average values.
摘要:
In order to provide a touch sensor-equipped display device that is not susceptible to the effect of noise caused by a polarity reversal in a common voltage of a display device without using special circuitry, the disclosed touch sensor-equipped display device is provided with: a sensor output read circuit 21 that is sequentially connected to a plurality of sensor electrodes of a touch sensor part 7 and that outputs a signal voltage according to the electrical properties of each electrode; a sensor control circuit 23 that supplies a control signal to the sensor output read circuit 21; and a coordinate calculation circuit 22 that detects a contact position on the basis of the signal voltage. The coordinate calculation circuit 22 is provided with: an averaging circuit 221 that calculates the average values of signal voltage values obtained during a scan that was started in synchronization with a horizontal synchronization signal when the common voltage is reversed from positive polarity to negative polarity, and the signal voltage values obtained during a scan that was started in synchronization with a horizontal synchronization signal when the common voltage is reversed from negative polarity to positive polarity; and a contact position detection circuit 222 that detects the contact position on the basis of the average values.
摘要:
Provided is a touch sensor-equipped display device that is not susceptible to the effect of noise caused by the reversal of polarity of the common voltage of the display device, without using special circuits. The touch sensor-equipped display device includes: a touch sensor unit 7 having a plurality of sensor electrodes; a sensor output read circuit 21 that is sequentially connected to the respective sensor electrodes and that outputs a signal voltage corresponding to the electrical characteristics of the sensor electrode connected thereto; a sensor control circuit 23 that supplies a control signal to the sensor output read circuit 21; and a coordinate calculation circuit 22 that detects a contact position on the basis of the signal voltage. The coordinate calculation circuit 22 includes: an averaging circuit 221 that calculates an average value for the signal voltage values outputted from the sensor output read circuit 21 over two cycles of the vertical synchronizing signal; and a contact position detection circuit 222 that detects the contact position on the basis of the average value.
摘要:
Provided is a touch sensor-equipped display device that is not susceptible to the effect of noise caused by the reversal of polarity of the common voltage of the display device, without using special circuits. The touch sensor-equipped display device includes: a touch sensor unit 7 having a plurality of sensor electrodes; a sensor output read circuit 21 that is sequentially connected to the respective sensor electrodes and that outputs a signal voltage corresponding to the electrical characteristics of the sensor electrode connected thereto; a sensor control circuit 23 that supplies a control signal to the sensor output read circuit 21; and a coordinate calculation circuit 22 that detects a contact position on the basis of the signal voltage. The coordinate calculation circuit 22 includes: an averaging circuit 221 that calculates an average value for the signal voltage values outputted from the sensor output read circuit 21 over two cycles of the vertical synchronizing signal; and a contact position detection circuit 222 that detects the contact position on the basis of the average value.
摘要:
A touch-sensored display device 20 according to the present invention includes: a counter substrate 6 disposed on a viewer side of an active matrix substrate 8 via a display medium layer 4, the counter substrate 6 having a counter electrode 5 which opposes pixel electrodes; a display panel driving circuit 14 for supplying to the counter electrode 5 a common voltage which undergoes periodic inversion in polarity; a transparent conductive film 7 for position detection placed so as to oppose the counter electrode 5 via the counter substrate 6; a strobe signal generation circuit 32 for generating a strobe signal which is in synchronization with a polarity inversion period of the common voltage, and a noise-cut current signal generation circuit 30 for generating a noise-cut current signal which is obtained by eliminating based on the strobe signal a predetermined portion from a current flowing from a terminal connected to the transparent conductive film 7 for position detection.
摘要:
A bicycle pedal assembly has a cleat releasably coupled to a pedal by a cleat engagement mechanism formed on an upper surface of its pedal body. The pedal body has a front end configured and arranged to include a sole guide portion that assists the rider in rotating the pedal body about its pedal shaft. In one embodiment, the sole guide portion is formed by a first concaved sole receiving recess located in a tip surface of the pedal body and a second concaved sole receiving recess located on the upper surface of the pedal body adjacent to the tip surface. Alternatively, the concaved sole receiving recesses can be replaced with either a pair of laterally spaced projections located on at the front end of the pedal body, or a V-shaped tip surface.