Abstract: This disclosure provides systems, methods, and apparatus for providing pixel circuits for controlling the state of operation of light modulators in a display device. The state of operation of the light modulator is controlled by the pixel circuit based on a data voltage stored in a data storage element of the pixel circuit. The pixel circuit includes a compensation capacitor, which is used to inject charge into the data storage element. In some implementations, this injection of charge boosts the voltage across the data storage capacitor thereby improving the reliability of the pixel circuit.

Abstract: Upon each detection of an image switch by a display switch detection portion (27) included in a display control circuit (200), a selection frequency determination portion (23) makes a determination for each row corresponding to a scanning signal line as to whether or not the row includes any pixel with a middle tone. Further, a scanning signal output control portion (26) performs drive control such that any scanning signal line corresponding to a row without such a pixel is selected at intervals of one frame period. This results in reduced power consumption in selecting the scanning signal lines.

Abstract: When there are a plurality of rows with the same display content, a scanning order calculating portion (23) provided in a display control circuit (200) determines addresses sequentially such that scanning signal lines corresponding to the rows are selected at the same time. A scanning order setting portion (24) controls an address output portion (26) such that the scanning signal lines are selected in such an order, and also controls digital image signals DV outputted by output frame memory (22). In this case, the number of changes in potential for video signal lines can be reduced by the number of rows selected at the same time, resulting in reduced power consumption for driving the video signal lines.

Abstract: A scanning order calculating portion (23) included in a display control circuit (200) determines the order of selecting all rows by repeating the following: the row for which the total amount of potential variation relative to a reference row is the lowest is selected as a subsequent row, and the row having been selected as the subsequent row is used as the next reference row in a similar operation to determine the next row to be set as a subsequent row. A scanning order setting portion (24) controls an address outputting portion (26) such that the scanning signal lines are selected in the determined order, and also controls digital image signals DV outputted by output frame memory (22). Power consumed by driving video signal lines can be reduced by selecting the scanning signal lines in such an order that the total amount of potential variation of the video signal lines becomes smaller.

Abstract: In a method of operating an optical sensor circuit (11) in accordance with one embodiment of the present invention, main reset is performed prior to sensing of incident light with use of a PIN diode (4) and, between the main reset and next main reset, auxiliary reset is performed so that a potential of a cathode terminal of the PIN diode (4) is reduced within a predetermined range within which storage of carriers is not induced in an intrinsic region of the PIN diode (4).

Abstract: By reducing the potential drop of a storage node that occurs due to feedthrough, the capacitance of a storage capacitor is reduced and sensor sensitivity is improved. In a photosensor, the first terminal of a storage capacitor (C2) and the gate of a MOS transistor (M1), which outputs a signal in accordance with the potential of a storage node (N2), are connected to the storage node (N2). A forward biased pulse voltage is supplied to the anode of a first photodiode (DS) in a reset period, and a reverse biased voltage is supplied to the anode of the first photodiode in a storage period and a readout period. A reverse biased voltage is supplied to the anode of a second photodiode (DM) in all operation periods.

Abstract: Provided is a touch panel-equipped display device (10) including: a touch panel (14); a display part (12) including source bus lines (25); a source bus line potential switching part that switches the potential of each source bus line (25) in a source bus line potential switching period (54) that is a partial period of a vertical blanking period (51); and a sensing part that performs sensing for a touch panel in a sensing period (53) that is a period in the vertical blanking period (51) other than the partial period.

Abstract: The touch panel of the present invention is a touch panel (1) that applies drive signals to drive electrodes (2) and carries out detection on the basis of the variation in the amount of charge that has been induced on detection electrodes (3), and is configured such that when drive signals are being applied to the drive electrodes, complementary signals having a different phase from the drive signals are applied to complementary electrodes (4), and the complimentary electrodes (4) are configured such that the amplitude (?Vcm) of the complimentary signals satisfies the following formula: ?Vcm=??Vdr×(Cfo+Ccr)/Ccm.

Abstract: The touch panel (1a) of the present invention includes a plurality of driver electrodes (2), a plurality of detection electrodes (3) that extend in the column direction, and a complementary electrode (4), which extends in the direction in which the driver electrodes extend, and which forms a parasitic capacitance that corresponds to capacitance components that are not affected during detection of an object to be detected that comes into contact with or approaches the detection surface among the parasitic capacitances formed in the gaps between the driver electrodes (2) and the detection electrodes (3), in the gap from the detection electrodes (3).

Abstract: For drive lines (D1 to D5) corresponding to sense lines (S1L to S14L), prescribed pulse signals (P1 to P5) are sequentially applied via terminals (T15 to T19), and for drive lines (D6 to D10) corresponding to sense lines (S1R to S14R), with the same timing as the timing for which the drive lines (D1 to D5) are sequentially driven, the given pulse signals (P1 to P5) are sequentially applied via terminals (T20 to T24).

Abstract: The purpose of the present invention is to ensure uniformity among pixels when an electrode for a touch sensor also acts as an electrode for image display at the same time. This display device includes: a circuit substrate; a plurality of pixel electrodes (12) that are arranged in a matrix on a plane that is parallel to the circuit substrate; a liquid crystal layer that can exhibit an image display function on the basis of an image signal supplied to the plurality of pixel electrodes (12), a plurality of driver electrodes (14) arranged in the same layer with gaps therebetween, which can generate an electric field with the pixel electrodes (12) to alter the state of the liquid crystal layer; and a plurality of detection electrodes in the same layer that can be capacitively coupled to the plurality of driver electrodes, respectively, in which at least one of the plurality of driver electrodes (14) is provided with slits (20).

Abstract: A plurality of sensor circuits each including an optical sensor and a charge retention transistor each provided between a reset line and an accumulation node are arranged in a pixel region of a display device. In a sensing period, a LOW-level voltage is applied as a reset cancellation voltage to the reset line RSTa, and a HIGH-level voltage is applied to a control line CLKa to control the charge retention transistor to be in an ON state. In a period other than the sensing period, the LOW-level voltage is applied to the control line CLKa to control the charge retention transistor to be in an OFF state, and the HIGH-level voltage is applied as a retention voltage to the reset line RSTa. Thus, a drain-source voltage Vds of the charge retention transistor is lowered, a leakage current through the charge retention transistor is reduced, and a light detection accuracy is enhanced.

Abstract: In a counter circuit of a control signal generating circuit, a selector circuit selects under control which is in accordance with a selector circuit control signal (CTR) a predetermined one in a signal VSYNC and a signal HSYNC, which are pulse signals, so as to input a pulse signal thus selected to a counter. The counter outputs a counted result of pulses of the inputted pulse signal. By use of the counted result, a VSYNC synchronization signal generating circuit or an HSYNC synchronization signal generating circuit generates a control signal to control the driving of image display.

Abstract: Provided is a display device that is capable of ensuring a wide dynamic range of an optical sensor even in the case where an offset due to ambient temperature changes is compensated with use of an output of a reference element. The display device has optical sensors in a pixel region of an active matrix substrate (100), wherein the optical sensors include a photodetecting sensor which outputs a sensor signal according to an amount of received light, and a reference sensor which has a configuration obtained by adding a light shielding film to the photodetecting sensor and outputs a sensor signal according to an offset component.

Abstract: Detection signals of respective photo sensor circuits (senS, senD, senON, and senOFF) are activated so as to be output at once for each group of prescribed plural number of sensor rows (LSk) by a row driver (6). Within the prescribed number of sensor rows (LSk), photo sensor circuits (senS, senD, senON, and senOFF) sharing the same power line (SL2, SL5, . . . ) between at least two different sensor rows (LSk) are included. The detection signals of the respective photo sensor circuits (senS, senD, senON, and senOFF) in the prescribed number of sensor rows (senS, senD, senON, and senOFF) are output via mutually different output lines (SL1/SL3, SL4/SL6, . . . ).

Abstract: The present invention aims to provide a monolithic driver-type display device capable of reducing circuit scale of a sampling circuit, and keeping low power consumption by directly driving a source driver with an externally provided video signal. In the monolithic driver-type display device having a display portion for displaying video and circuits for driving the display portion formed on the same insulating substrate, a plurality of sampling switches are provided in association with a plurality of pieces of bit data contained in externally inputted digital video signals. The sampling switches are opened/closed based on sampling signals, thereby sampling the digital video signals for each piece of the bit data and converting the signals into parallel format for output to data lines. The outputted digital video signals charge parasitic capacitances on the data lines and are held therein.

Abstract: By reducing the potential drop of a storage node that occurs due to feedthrough, the capacitance of a storage capacitor is reduced and sensor sensitivity is improved. In a photosensor, the first terminal of a storage capacitor (C2) and the gate of a MOS transistor (M1), which outputs a signal in accordance with the potential of a storage node (N2), are connected to the storage node (N2). A forward biased pulse voltage is supplied to the anode of a first photodiode (DS) in a reset period, and a reverse biased voltage is supplied to the anode of the first photodiode in a storage period and a readout period. A reverse biased voltage is supplied to the anode of a second photodiode (DM) in all operation periods.

Abstract: The present invention provides a display panel (10) of an active matrix type including a display section (12) in which pixels (30) are arranged, wherein the display section (12) includes optical sensors whose output signal is transmitted to a peripheral region (13) via a source bus line (20), wherein an optical sensor output line (50) used for the transmission of the output signal is electrically connectable with a non-optical sensor output line (52) and the display panel (10) includes an optical sensor output sharing switch (60) for switching over connection and disconnection of the optical sensor output line (50) and the non-optical sensor output line (52).

Abstract: The present invention aims to provide a monolithic driver-type display device capable of reducing circuit scale of a sampling circuit, and keeping low power consumption by directly driving a source driver with an externally provided video signal. In the monolithic driver-type display device having a display portion for displaying video and circuits for driving the display portion formed on the same insulating substrate, a plurality of sampling switches are provided in association with a plurality of pieces of bit data contained in externally inputted digital video signals. The sampling switches are opened/closed based on sampling signals, thereby sampling the digital video signals for each piece of the bit data and converting the signals into parallel format for output to data lines. The outputted digital video signals charge parasitic capacitances on the data lines and are held therein.

Abstract: An engine control apparatus for controlling output torque of an engine includes a target determining unit for determining a target value of an injection quantity of fuel on the basis of pressure in a cylinder of the engine. The engine control apparatus further includes an injection control unit for controlling the injection quantity at the target value in a startup injection control period in starting of the engine. The startup injection control period is between a specific startup timing and an end timing where a specific condition is satisfied.