Abstract: A capacitive touch panel capable of reducing a disturbance noise and reducing touch detection time with a simple structure is obtained.

Abstract: A capacitive type touch sensor appropriately detecting an object, and a display and an electronic device including such a touch sensor are provided. The display including a drive electrode receiving a drive signal, a detection electrode located adjacent to the drive electrode, and a dielectric material located between the drive electrode and the detection electrode defining a capacitive area. The detection electrode generates an output signal driven by the drive signal, a detection circuit electrically connected to the detection electrode sensing the output signal. A switch element is electrically connected between the detection electrode and a voltage source providing a predefined voltage level and having a first state and a second state. A display control circuit controls a voltage applied between a display common voltage electrode and a pixel electrode to display an image based on an image signal, and the display common voltage electrode serves as the drive electrode.

Abstract: A liquid crystal display device is provided, which may reduce flicker in all display gray levels. The liquid crystal display device includes a scan line drive circuit, a signal line drive circuit and a common connection line drive circuit. The common connection line drive circuit applies a voltage, the voltage having polarity opposite to polarity of the signal line, to a common connection line corresponding to a liquid crystal element as a selection object in a write period for writing into the liquid crystal element as a selection object, and applies one or multiple voltages, each voltage having a value different from a center value between an upper limit value and a lower limit value of voltages applied to the common connection lines in the write period, to the common connection lines in a holding period after writing into the liquid crystal element as a selection object is performed.

Abstract: A liquid crystal display apparatus includes a pixel array section having a plurality of scanning lines disposed in rows, a plurality of signal lines disposed in columns, a plurality of pixel circuits, a plurality of liquid crystal elements, and a plurality of common connection lines, and a drive circuit section having a scanning line drive circuit, a signal line drive circuit, and a common connection line drive circuit. The drive circuit section drives each of the pixel circuits so that a holding period in each frame period has a period during which a voltage of one liquid crystal element falls and a period during which the voltage rises.

Abstract: A display includes: display pixel electrodes; common electrodes; a display layer; a display control circuit; touch detection electrodes; and a touch detection circuit detecting an external proximity object based on a detection signal obtained from the touch detection electrodes with use of a common drive voltage for display applied to the common electrode as a touch sensor drive signal. The touch detection circuit includes: a first filter allowing a fundamental detection signal, contained in the detection signal and having a frequency same as a fundamental frequency of the touch sensor drive signal, to pass therethrough, a plurality of second filters separately allowing two or more harmonic detection signals, contained in the detection signal and having frequencies same as respective harmonic frequencies of the touch sensor drive signal, to pass therethrough, and a detection section performing a detection operation based on the fundamental detection signal and the harmonic detection signals.

Abstract: Disclosed herein is a display device, including: a display surface; a display functional layer adapted to control the display of a screen viewed from outside the display surface; a drive control section operable to perform display scanning and driving adapted to scan and drive, in the one direction, the plurality of drive electrodes, and also operable to perform, a plurality of times and for M display screens, detection scanning and driving adapted to continuously scan and drive all or part of the plurality of drive electrodes within the period of time; and a plurality of sensor lines arranged in a direction other than the one direction to be separate from each other, which produce an electrical change if an object to be detected comes in contact with or proximity to the display surface while the drive control section performs the detection scanning and driving.

Abstract: An information input device includes a touch panel which is provided with a touch sensor capable of sensing a position in which a sensing target body is close to a sensing surface thereof. The touch sensor includes a scanning electrode and a detection electrode which faces and is spaced from the scanning electrode with a dielectric body being interposed therebetween, the touch sensor being configured so that electrostatic capacitance which is formed between the scanning electrode and the detection electrode is varied when the sensing target body is close to the detection electrode. The detection electrode is formed with a slit in a surface thereof which faces the scanning electrode, and a floating electrode is installed in the slit.

Abstract: A display includes: display pixel electrodes; common electrodes; a display layer; a display control circuit performing image display control based on an image signal; touch detection electrodes each arranged to form a capacitance between each of the touch detection electrodes and each of the common electrodes; and a touch detection circuit detecting an external proximity object based on a detection signal obtained from the touch detection electrodes with use of a common drive voltage for display applied to the common electrodes by the display control circuit as a touch sensor drive signal. The touch detection circuit includes: an A/D (analog-digital) converter section performing sampling of a detection signal obtained from each of the touch detection electrodes at three or more different sampling frequencies to produce three or more sampling detection signals, and a detection section performing a detection operation based on the three or more sampling detection signals.

Abstract: A touch detection device includes: a detection surface; a plurality of sensor lines formed from a plurality of types of wiring lines having a different line capacitance; and a touch detection unit which detects an electric variation generated in a plurality of the sensor lines in response to touch or proximity of a detection target object to the detection surface, wherein the touch detection unit has an operational circuit for generating a detection signal representing the electric variation by performing an operation process using a line capacitance ratio for a plurality of outputs from a plurality of types of the sensor lines neighboring to one another with a different line capacitance.

Abstract: A touch sensor that may detect an object away from the sensor is provided. The touch sensor includes one or more drive electrodes; one or more detection electrodes forming capacitance in cooperation with the respective drive electrodes; a detection circuit applying drive signals to the respective drive electrodes to detect the object based on detection signals obtained from the respective detection electrodes in response to the respective drive signals; and a controller controlling to change a range of electric flux lines generated between the drive electrodes and the detection electrodes.

Abstract: A display device includes: a display functional layer that can change display for each pixel in accordance with an application voltage; a plurality of driving electrodes separately disposed in one direction; a plurality of pixel signal lines to which pixel signals used for applying the application voltage to the display functional layer in accordance with an electric potential difference from the display reference electric potential are applied; a plurality of detection electrodes that are separately disposed in a direction other than the one direction, are coupled with the driving electrodes as electrostatic capacitance, generate detection electric potentials in response to the detection driving signal, and change the detection electric potential in accordance with approach of a detection target object; and a pixel signal control unit that controls the pixel signals so as to include pixel signals having different polarities during the display period.

Abstract: A capacitance-type touch panel, allowing disturbance noise and touch detection time to be reduced and having a simple configuration, is provided. The capacitance-type touch panel including: a plurality of drive electrodes each having a strip shape; a drive control circuit performing control such that a drive signal for touch detection is selectively applied to the drive electrodes; a plurality of touch detection electrodes arranged to intersect with the drive electrodes in such a manner that capacitance is formed in each intersecting part, and each outputting a detection signal in synchronization with the drive signal; and a detection circuit detecting an external proximity object based on the detection signal. The drive control circuit controls application of the drive signal in such a manner that the detection signal is a polarity-alternating signal including a positive-negative asymmetrical signal component which is due to presence of the external proximity object.

Abstract: A touch panel, a display panel, and a display unit achieving prevention of erroneous detection caused by external noise, are provided. The touch panel includes: a plurality of detection scan electrodes extending in a first direction; and a plurality of detection electrodes facing the plurality of detection scan electrodes and extending in a second direction which intersects the first direction. A ratio of fringe capacitance to total capacitance between one or more selected detection scan electrodes and a first detection electrode is different from a ratio of fringe capacitance to total capacitance between the one or more selected detection scan electrodes and a second detection electrode. The one or more selected detection scan electrodes are selected, in a desired unit, from the plurality of detection scan electrodes, to be supplied with a selection pulse, and each of the first and the second detection electrodes is selected from the plurality of detection electrodes.

Abstract: A touch sensor includes a touch drive electrode, a touch detection electrode provided opposed to or side by side with the touch drive electrode and forming an electrostatic capacitance between the touch detection electrode and the touch drive electrode, and a touch detection circuit detecting a contact or proximity position of an object on the basis of a detection signal obtained from the touch detection electrode by applying a touch sensor drive signal to the touch drive electrode. The touch drive electrode is split into plural stripe-like electrode patterns. Applying the touch sensor drive signal to part of the electrode patterns forms a drive line at that time. The touch detection circuit performs a detection on the basis of a first detection signal obtained from a first drive line formed in a first period, and a second detection signal obtained from a second drive line formed in a second period.

Abstract: The display device with high detection accuracy includes: display pixel electrodes; a common electrode; a display function layer; a display control circuit performing image display control by applying a pixel voltage to each of the display pixel electrodes and applying a common drive voltage to the common electrode, the common drive voltage inverting in synchronization with a drive cycle of the image display control; a touch detection electrode cooperating with the common electrode to form a capacitor; and a touch detection circuit detecting an external proximity object, based on a detection signal obtained from the touch detection electrode in response to the common drive voltage applied to the common electrode. The touch detection circuit corrects the detection signal based on a gray scale of the image signal at the time of acquisition of the detection signal, and performs the detection operation.

Abstract: A display apparatus includes: a display face; a display function layer adapted to vary display on the display face in response to an inputted image signal; a plurality of driving electrodes disposed separately in one direction; a detection scanning control section configured to apply a detection driving voltage to some of the plural driving electrodes and carry out detection driving scanning while shifting an application object of the detection driving voltage in the one direction on the display face and then control the detection driving scanning such that jump shift of carrying out shift with a pitch of twice or more times a driving electrode pitch is included; and a plurality of sensor lines disposed separately in a direction different from the one direction and responding to touch or proximity of a detection object with or to the display face to exhibit an electric variation.

Abstract: The display device with high detection accuracy includes: display pixel electrodes; a common electrode; a display function layer; a display control circuit performing image display control by applying a pixel voltage to each of the display pixel electrodes and applying a common drive voltage to the common electrode, the common drive voltage inverting in synchronization with a drive cycle of the image display control; a touch detection electrode cooperating with the common electrode to form a capacitor; and a touch detection circuit detecting an external proximity object, based on a detection signal obtained from the touch detection electrode in response to the common drive voltage applied to the common electrode. The touch detection circuit performs the detection operation in a inversion period following an inversion timing of the common drive voltage, based on both first and second detection signals obtained before and after the inversion timing, respectively.

Abstract: A display device having a pixel section pixel circuits, scan lines, capacity lines, a drive circuit driving the scan lines and the capacity lines selectively, a generation circuit generating a common voltage signal switching in level at a predetermined cycle, and a correction circuit correcting the signals driving the capacity lines of the drive circuit, wherein each pixel circuit contains a display element and holding capacitor, a first pixel electrode of the display element pixel cell, a first electrode of the holding capacitor, and one terminal of the switching element are connected, a second electrode of the holding capacitor is connected to the capacity lines arrayed in a corresponding row, and the common voltage signal is applied in a second pixel electrode of the display element.

Abstract: The present invention provides a liquid crystal display device including: a pixel array including a plurality of scanning lines arranged in rows, a plurality of signal lines arranged in columns, a plurality of liquid crystal elements arranged in a matrix corresponding to an intersection of each scanning line and each signal line, and a plurality of common connection lines arranged one by one corresponding to the liquid crystal elements of each line; a scanning line drive circuit; a signal line drive circuit; and a common connection line drive circuit electrically separating, from each other, one or a plurality of common connection lines (first common connection lines), and a plurality of common connection lines (second common connection lines), and electrically connecting the plurality of second common connection lines to each other to independently drive the first common connection line and the second connection lines from each other.

Abstract: An information input device includes a touch panel configured to be provided with a touch sensor that detects a position at which a sensing object is brought close to a sensing surface. In this information input device, the touch sensor has a scanning electrode and a detecting electrode that is opposed to the scanning electrode with the intermediary of a dielectric substance, and is a capacitive sensor whose electrostatic capacitance changes if the sensing object is brought close to the detecting electrode. Furthermore, a slit is formed in a surface of the detecting electrode opposed to the scanning electrode.