Abstract: In a touch panel in which lines connected to electrodes used for detecting a touched position are arranged in an area where a touched position can be detected, the accuracy of detection of a touched position is improved. The touch panel includes a substrate; a group of electrode pairs arrayed in a predetermined direction on the substrate; a terminal unit arranged closer to one of ends in the predetermined direction on the substrate, than the group of electrode pairs is; a group of lead-out lines arranged on the substrate, for electrically connecting the group of electrode pairs and the terminal unit; and a control unit electrically connected with the terminal unit, the control unit supplying a signal through the group of lead-out lines to the group of electrode pairs, and detecting an amount of change in charges from each electrode pair. The control unit includes a provisional decision part, and a correction part.

Abstract: A touch panel with improved accuracy for detecting a touched position is provided. A touch panel 10 includes a substrate 18; a plurality of electrodes 24A, 24B provided on the substrate 18; a control unit (controller 16) that detects a touched position on the substrate 18; and a plurality of lead-out lines 22A, 22B that electrically connect the control unit and the electrodes 24A, 24B. At least a part of the lead-out lines 22A, 22B is arranged in an area on the substrate 18 where a touched position can be detected.

Abstract: A touch panel is realized that is able to decrease the amount of dead space at the periphery of the touch panel and that has highly accurate touch panel sensitivity. In a touch panel, Y direction conductive patterns are arranged so as to be separated from wiring patterns in Y direction conductive pattern regions between electrode units of X direction conductive patterns. As a result, in this conductive sheet, it is possible to appropriately prevent the occurrence of parasitic capacitance resulting from the Y direction conductive patterns and the wiring patterns. Therefore, in a touch panel device or the like that uses such a touch panel, it is possible to effectively prevent the generation of noise that overlaps sense signals as a result of the above-mentioned parasitic capacitance, thereby making it possible to realize highly accurate touch panel sensitivity.

Abstract: An input device (1) includes a drive electrode provided in each of sensor areas (R1 to R4) and configured to receive a drive signal, a sense electrode configured to output a response signal to the drive signal, and a control unit (20) configured to input a drive signal to the drive electrode to drive each of the sensor areas, and detect, in each of the sensor areas, touch or approach of a target object to each of the sensor areas. The control unit (20) controls to simultaneously drive at least two of the sensor areas. Drive signals inputted to the drive electrodes in the at least two simultaneously driven sensor areas have drive frequencies different from each other.

Abstract: A touch panel includes: a sensor unit that includes a plurality of drive electrodes and a plurality of sensor electrodes that intersect one another defining a sensing area, the sensing area being divided into a plurality of preset regions; a measurement unit that measures electrostatic capacitance of intersection capacitance at each intersection of the drive electrodes and the sensor electrodes by charging the intersection capacitance for a charging period that is prescribed by a control signal provided to the measurement unit; a region determination unit that determines to which one of the preset regions in the sensing area the intersection capacitances respectively belong; and a signal generation unit that generates the control signal such that a length of the prescribed charging period varies in accordance with a determination result of the region determination unit.

Abstract: Provided is a drive circuit including: an image supply section for supplying an image to be displayed on a liquid crystal panel (2); a command issuing section for issuing a command that instructs an image displayed on the liquid crystal panel (2) to be updated; a low-speed oscillation circuit (13) for supplying a low-speed clock signal (L-CLK); a high-speed oscillation circuit (8) for supplying a high-speed clock signal (H-CLK) higher in frequency than the low-speed clock signal (L-CLK); image outputting means for supplying, to the liquid crystal panel (2), the image from the image supplying means, the image outputting means being driven by the high-speed clock signal (H-CLK); and a logic section (10) for controlling, in accordance with the command issued by the command issuing section, whether or not to cause the high-speed oscillation circuit (8) to operate, the logic section (10) being driven by the low-speed clock signal (L-CLK).

Abstract: The liquid crystal display device (1) includes a liquid crystal panel (69) having, for each of pixels (60), a digital memory element (68) for holding an electric potential according to image data and a liquid crystal cell (64) for displaying an image by receiving the electric potential from the digital memory element (68); and a liquid crystal driver circuit (10) having an AC control section (22) for reversing a polarity of an AC voltage applied to the liquid crystal cell (64) on a given cycle and an image transmission control section (21) for issuing instruction on outputting of image data to the liquid crystal panel (69).

Abstract: Disclosed is a position detection system capable of detecting the position of a line-shaped object. From among two connected lines (E1E2 and E1?E2?) created by connecting opposed intersecting points among four interesting points (E1, E2, E1?, and E2?), a position detection unit (12) treats the one connected line (E1E2) with a length closer to the overall length of a rod (ST) as the position of the rod (ST) that overlaps a coordinate map region (MA).

Abstract: During the first frame, a first common electric potential is used, all picture elements of an identical line have an identical write polarity, there is another line of picture elements having a write polarity different from the identical write polarity, a data signal having a first electric potential lower than the first common electric potential is supplied to a line for a negative write polarity, a picture element electrode electric potential is changed to a second electric potential greater than a second common electric potential and lower than the first common electric potential by changing a storage capacitor electric potential from Low to High after a selection period ends, a data signal having a third electric potential greater than the first common electric potential is supplied to a line for a positive write polarity, and the storage capacitor electric potential is still kept Low after the selection period ends.

Abstract: Provided is a drive circuit including: an image supply section for supplying an image to be displayed on a liquid crystal panel (2); a command issuing section for issuing a command that instructs an image displayed on the liquid crystal panel (2) to be updated; a low-speed oscillation circuit (13) for supplying a low-speed clock signal (L-CLK); a high-speed oscillation circuit (8) for supplying a high-speed clock signal (H-CLK) higher in frequency than the low-speed clock signal (L-CLK); image outputting means for supplying, to the liquid crystal panel (2), the image from the image supplying means, the image outputting means being driven by the high-speed clock signal (H-CLK); and a logic section (10) for controlling, in accordance with the command issued by the command issuing section, whether or not to cause the high-speed oscillation circuit (8) to operate, the logic section (10) being driven by the low-speed clock signal (L-CLK).

Abstract: The liquid crystal display device (1) includes a liquid crystal panel (69) having, for each of pixels (60), a digital memory element (68) for holding an electric potential according to image data and a liquid crystal cell (64) for displaying an image by receiving the electric potential from the digital memory element (68); and a liquid crystal driver circuit (10) having an AC control section (22) for reversing a polarity of an AC voltage applied to the liquid crystal cell (64) on a given cycle and an image transmission control section (21) for issuing instruction on outputting of image data to the liquid crystal panel (69).

Abstract: Disclosed is a position detection system capable of detecting the position of a line-shaped object. From among two connected lines (E1E2 and E1?E2?) created by connecting opposed intersecting points among four interesting points (E1, E2, E1?, and E2?), a position detection unit (12) treats the one connected line (E1E2) with a length closer to the overall length of a rod (ST) as the position of the rod (ST) that overlaps a coordinate map region (MA).

Abstract: A position detection unit divides a plurality of LEDs (23A to 23C) into a plurality of sets, wherein one set includes a plurality of LEDs (23) (LED 23A and LED 23B), and one set includes a single LED (23C) only, for example, and turns on the LEDs on a per-set basis. The position detection unit further determines whether or not the next lighting will occur according to the total number of shadows that were caused by objects that were lit in the first lighting and that were detected by a line sensor unit.

Abstract: During the first frame, a first common electric potential is used, all picture elements of an identical line have an identical write polarity, there is another line of picture elements having a write polarity different from the identical write polarity, a data signal having a first electric potential lower than the first common electric potential is supplied to a line for a negative write polarity, a picture element electrode electric potential is changed to a second electric potential greater than a second common electric potential and lower than the first common electric potential by changing a storage capacitor electric potential from Low to High after a selection period ends, a data signal having a third electric potential greater than the first common electric potential is supplied to a line for a positive write polarity, and the storage capacitor electric potential is still kept Low after the selection period ends.

Abstract: A liquid crystal display including liquid crystal panels of different sizes for displaying an image through a phase-developed image signal and having a reduced circuit scale is disclosed. A liquid crystal panel drive circuit is used for driving first and second liquid crystal panels of driver monolithic type having different sizes. External image data is temporarily stored in an image memory through a host interface section. A read control section reads the image data from the image memory in such a way that a two-phase developed image signal is outputted if the operating panel is the first liquid crystal panel and a single-phase developed image signal is outputted if the operating panel is the second one. The thus generated phase developed image signal is supplied as an analog video signal to the operating panel out of the first and second liquid crystal panels through a gamma conversion section, a D/A conversion section, an output section.

Abstract: In a buffer that outputs an analog voltage Vout to be applied as a driving voltage to a pixel capacitance in a display region of an active-matrix liquid crystal display device, a CMOS circuit for generating this analog voltage includes four Pch transistors (QP0 to QP3) connected in parallel and four Nch transistors (QN0 to QN3) connected in parallel. When charging the pixel capacitance, a bias current is reduced and the driving capability is lowered by control with selector switches (SP1 to SP3) at a time at which the large driving capability at the beginning of the charging is not necessary anymore. And when discharging the charge that has accumulated at the pixel capacitance, the bias current is reduced and the driving capability is lowered by control with selector switches (SN1 to SN3) at a time at which the large driving capability at the beginning of the discharging is not necessary anymore.

Abstract: In a buffer that outputs an analog voltage Vout to be applied as a driving voltage to a pixel capacitance in a display region of an active-matrix liquid crystal display device, a CMOS circuit for generating this analog voltage includes four Pch transistors (QP0 to QP3) connected in parallel and four Nch transistors (QN0 to QN3) connected in parallel. When charging the pixel capacitance, a bias current is reduced and the driving capability is lowered by control with selector switches (SP1 to SP3) at a time at which the large driving capability at the beginning of the charging is not necessary anymore. And when discharging the charge that has accumulated at the pixel capacitance, the bias current is reduced and the driving capability is lowered by control with selector switches (SN1 to SN3) at a time at which the large driving capability at the beginning of the discharging is not necessary anymore.