Abstract: An electro-optical device is provided having a pixel portion with a novel structure, and in which display irregularities such as crosstalk, which develop due to a drop in voltage caused by the wiring resistance of electric current supply lines in an electro-optical device, are improved upon. Attention is drawn to the fact that during a period in which write in of a signal to a pixel from a signal line is not performed, a signal is not input to a source signal line and to a gate signal line, but are at a fixed electric potential. An electric current supply line and a source signal line, or an electric current supply line and a gate signal line, are connected through a switching transistor. A signal is input to a connection control line during a sustain period, and the connection transistor is made conductive. The source signal line or the gate signal line is therefore utilized as a pathway for supplying electric current to the EL element.

Abstract: Display is effected by applying a DC voltage to electrodes to change distribution states of migration particles and by applying an AC voltage to electrodes to move the migration particles in a strong electric field created in a closed container depending on a relationship of different relative dielectric constants between the migration particles and a dispersion medium.

Abstract: A liquid crystal display is provided, which includes: a plurality of pixel row groups, each pixel row group including at least one pixel row that includes a plurality of pixels arranged in a matrix and including switching elements; a plurality of gate lines connected to the switching elements and transmitting a gate-on voltage for turning on the switching elements; and a plurality of data lines connected to the switching elements and transmitting data voltages, wherein the switching elements in adjacent pixel row groups are connected to the data lines at opposite sides.

Abstract: An electro-optical apparatus includes a first and second data lines that intersect with scanning lines. A first and second pixel electrodes are positioned at opposite sides of the corresponding scanning line. A first signal electrode is formed on the electrode forming surface at a position adjacent to the first pixel electrode and is connected to the first data line. A second signal electrode is formed on the electrode forming surface at a position adjacent to the second pixel electrode and is connected to the second data line. The second signal electrode includes an interline electrode portion formed in a gap between the second pixel electrode and the first pixel electrode positioned at the second side with respect to the second pixel electrode.

Abstract: A pulse signal drive circuit includes an energy storage device. A source of energy supplies a substantially constant flow of energy to the energy storage device. A switch circuit draws repetitive pulses of substantially constant energy from the energy storage device to generate corresponding pulse drive signals.

Abstract: An active matrix for a liquid crystal display device including pixel electrodes arranged in a crossed network of rows and columns. Associated with each pixel electrode, an electrode control device is provided, including a first switching element connected between the pixel electrode and an associated column, a control electrode of the switching element being connected to an associated row. The control device includes an initialization circuit for the pixel electrode including a second switching element, connected to the pixel electrode, and a control electrode of which is connected to a preceding row of the network. Such an active matrix may be applicable to active matrix bistable nematic displays.

Abstract: An organic electroluminescence device includes: first and second substrates spaced apart from each other by a predetermined distance; a plurality of array elements having TFTs formed on the first substrate; organic electroluminescent diodes each having a first electrode acting as a common electrode, an organic electroluminescent layer formed under the first electrode, and a second electrode patterned for a sub-pixel, which are sequentially formed on the second substrate; and conductive spacers for electrically connecting the array elements and corresponding organic electroluminescent diodes, wherein the array elements are arranged on the first substrate in a matrix configuration, and power lines for supplying voltages to the array elements are formed in a mesh configuration.

Abstract: An exemplary liquid crystal display (400) includes a liquid crystal panel (430), a gate driving circuit (410), a data driving circuit (420), and a compensation circuit (440). The liquid crystal panel includes a plurality of gate lines (401) and a plurality of data lines (402) intersecting with the gate lines. The gate driving circuit is configured for providing a plurality of scanning signals to the gate lines in sequence. The data driving circuit is configured for providing a plurality of gray scale voltages to the data lines. The compensation circuit is configured for compensating the scanning signals. The compensation circuit is charged by alternate of the scanning signals, and discharges each such charge to provide a compensation signal to a gate line corresponding to a next scanning signal.

Abstract: The invention provides an organic LED display device of the digital drive type which has a display panel comprising a plurality of pixels 51. Each of the pixels 51 comprises an organic EL element 50, a drive transistor TR2 for effecting or interrupting the passage of current through the EL element 50 in response to the input of an on/off control signal, a write transistor TR1 to be brought into conduction upon receiving scanning voltage applied thereto from a scanning driver, a capacitance element C to be supplied with data voltage from a data driver by the write transistor TR1 conducting, and a comparator 9 for comparing a predetermined ramp voltage with the output voltage of the capacitance element C and supplying the result of comparison to the drive transistor TR2 as the on/off control signal.

Abstract: An active matrix type liquid crystal display device capable of reducing power consumption and eliminating switching loss so as not to cause surge when stepwise changing the gate pulse supplied to a gate line during selection. The device includes, as the selection voltage supply circuit (18), a first power source (VGH0) for supplying a predetermined selection voltage and a second power source (VANA) for supplying voltage lower than the selection voltage by a predetermined value, so that voltage from the second power source is always applied to an output point (VG1) of the selection voltage supply circuit and voltage from the first power source is superimposed during a time shorter than the selection period from the beginning of the selection time, thereby applying stepwise gate pulses (GPn, GPn+1, GPn+2, . . . ) to the predetermined selected gate lines (Xn, Xn+1, Xn+2, . . . ).

Abstract: In a manufacturing process of a display device, hydrogenation in an I layer of photodiodes D1 and D2 is progressed less than that in a channel portion of a pixel TFT, and a defect density due to dangling bonds not terminated in the I layer of the photodiodes D1 and D2 is made higher than a defect density in the channel portion of the pixel TFT. Thus, while suppressing a leakage current of the pixel TFT, the sensitivity of the photodiodes D1 and D2 to light is improved. Moreover, a gate electrode is provided above an i region of a pin-type optical sensor diode with an insulating film interposed therebetween. Thus, a gate voltage can control a threshold of a bias voltage when a current starts to flow into the optical sensor diode and a leakage current is prevented from flowing into the optical sensor diode.

Abstract: A circuit and a method for driving pixels of an organic light-emitting display are provided. The circuit comprises a thin-film transistor having a source terminal connected to a voltage source, a storage capacitor having a first terminal connected to a gate terminal of the thin-film transistor, and an organic light-emitting diode having a cathode connected to a ground. The gate terminal and a drain terminal of the thin-film transistor are connected in a clamping phase and a reverse phase. A second terminal of the storage capacitor is connected to the ground in the clamping phase, and is connected to a data line in a light-emitting phase and in the reverse phase. An anode of the organic light-emitting diode is connected to the drain terminal of the thin-film transistor in the light-emitting phase and in the reverse phase.

Abstract: A method of selecting an OLED device to be manufactured based on customer requirements, including the customer providing first and second sets of requirements, providing a plurality of OLED device constructions based on the first and second sets of requirements, device architecture options, and a database including device component performance information. The method also includes providing a number of performance parameters of each of the device constructions, determining, based upon the second set of requirements, a figure of merit term comprising two or more parameters and including the importance of those parameters, and using the figure of merit term to calculate a figure of merit for the possible OLED device constructions.

Abstract: A display apparatus which can display an image at a proper luminance corresponding to a video signal irrespective of a temperature-related change or a change with the passage of time. The display apparatus has: a current source for generating a reference current; and a reference transistor having an input terminal for a power voltage, an output terminal to which the current source is connected, and a control terminal connected to the output terminal and having almost the same electrical characteristics as those of a driving transistor for supplying a drive current to a light emitting device serving as a pixel. The driving transistor is driven by a voltage (reference control voltage) on the control terminal of the reference transistor. The loss of electric power can be suppressed by the driving method of this apparatus.

Abstract: A voltage to be used for scanning of scanning lines can be changed over between AVD1 which is within a gate withstanding voltage of a switching element and AVD2 higher than the gate withstanding voltage. Within a horizontal blanking period, scanning of the scanning lines is started with AVD1, and then precharging of data lines is performed. Thereafter, the voltage is changed over to AVD2. Since, at this point of time, a potential corresponding to the precharge voltage is generated in a pixel capacitor, even if AVD2 exceeding the withstanding voltage is applied to a pixel switch, a potential difference which does not exceed the withstanding voltage can be produced between terminals of the switching element.

Abstract: A liquid crystal display is provided, which includes: a pair of first and second signal lines transmitting select pulses having opposite polarity; a third signal line transmitting data voltages; first and second field generating electrodes separated from each other with a gap; and a plurality of diodes connected between the first and the second signal lines and the first and the second field generating electrodes and providing at least two different resistances.

Abstract: An input device includes: a sense line; a CS line to which an output voltage is applied; a TFT having a control terminal, a first terminal connected to the sense line, and a second terminal connected to the CS line, the first control terminal being supplied an input signal so that a conductivity between the first and second terminals is controlled; a photo-sensor having a first terminal which is connected to the control terminal of the TFT; and a holding capacitance, connected in parallel to the photo-sensor, having a terminal on an opposite side of the control terminal, to which a holding voltage is supplied, and in the input device, a voltage of the CS line is outputted as a detection signal to the sense line via the TFT.

Abstract: An apparatus of driving a light source for a display device includes a switching unit for selectively transmitting a DC input voltage, an oscillator for converting the DC input voltage into an AC voltage, and a transformer including a primary coil and a secondary coil for boosting the converted AC voltage using mutual inductance and for providing the boosted voltage for the light source. The driving apparatus further includes a current sensor for sensing a current in the oscillator or the secondary coil, and a light controller for controlling the switching unit based on the sensed current by the current sensor and a dimming control signal from an external device. Therefore, the current in the light source can be detected without a separate wire for connecting the light source and the light controller.

Abstract: An active matrix display device comprises an array of picture elements, e.g. liquid crystal picture elements, first and second sets of address conductors (16, 18) extending in row and column directions respectively and connected with the picture elements, and a set of connection conductor lines (30?) extending in the same direction as one set of address conductors (18), each of which is connected to a respective one of the other set of conductors (16), and via which address signals are supplied to that other set. To avoid unwanted display artefacts, each connection conductor line (30?) extends from one side of the array and terminates adjacent its connection point (32) to its associated address conductor (16) and a respective complementary conductor line (30?) is provided which extends from close to the connection point (32) to the opposite side of the array, the complementary conductor line being electrically separate from the connection line (30?) and coupled to reference signal supply (40).

Abstract: An organic electroluminescent device comprising a thin film transistor (TFT), an organic light-emitting diode (OLED), and a capacitor. The TFT is disposed in a non-emitting region of a substrate. An insulating layer is formed on the substrate and covers the switch TFT. The OLED having a top electrode and a bottom electrode is disposed on the insulating layer in an emitting region of the substrate. The capacitor having a top electrode and a bottom electrode is disposed on the insulating layer in the non-emitting region of the substrate and electrically connected to the TFT. The top electrode of the OLED and the top electrode of the capacitor are formed of a patterned conductive layer. A method of fabricating the organic electroluminescent device is also disclosed.

Abstract: A display device includes a dynamic ratioless shift register which is operated in a stable manner and can expand the degree of freedom of design. In the dynamic ratioless shift register which is provided with thin film transistors having semiconductor layers made of p-Si on a substrate surface, a node which becomes the floating state is connected to a fixed potential through a capacitance element.

Abstract: An organic electroluminescent device includes a gate line and a data line on a substrate, the data line crossing the gate line; a switching element connected to the gate line and the data line; a driving element having a plurality of thin film transistors interconnected in parallel, the driving element being connected to the switching element; and an organic electroluminescent diode connected to the driving element, wherein the driving element includes first and second gate electrodes, an active layer over the first and second gate electrodes, a drain electrode between the first and second gate electrodes, and a source electrode substantially surrounding the drain electrode.

Abstract: A portable display device (10) includes an LCD display module (12) that includes an embedded still image buffer (16), and external processing circuitry (24) and associated processor memory (22), wherein the processor memory (22) receives decoded motion video (30) as pixel data from a video decoder (216), while the data from the embedded still image memory is displayed on an LCD display (14). When a completely decoded frame of video is stored in the memory, the processing circuitry (24) turns an external pixel transfer clock signal (19) on and transfers the decoded frame (21) from the memory (22) to the embedded image buffer (16) in the LCD display module (12). When the transfer of the decoded frame (21) is complete, an end of frame indication signal (236) is generated and the processing circuitry (24) turns off the external pixel transfer clock signal (19) to the LCD display module (12).

Abstract: An organic light-emitting diode drive circuit for a display application includes a plurality of organic light-emitting diodes (OLEDs) having an anode and a cathode, the organic light-emitting diodes being connected to anode lines and cathode lines, and at least one drive circuit. The organic light-emitting diodes are arranged in a common anode configuration, whereas the drive circuit is configured as a common anode drive device, so that each concerned cathode line can be connected by a respective first switch to a current source and so that each concerned anode line can be connected by a respective second switch to a positive power supply. The respective first switches are configured such that, when a cathode line is in use, a connection is made between the cathode line in use and the respective current source and, when the cathode line is unused, the cathode line is connected to a positive power supply.

Abstract: A standard voltage generating circuit generates standard voltages as many as the number of gradations. Then, the standard voltages are separated into standard voltages of high level and those of low level, by a selector circuit, regardless of polarities thereof. One of the standard voltages of high level thus separated by the selector circuit is selected by a Pch-arranged converting section of a D/A converting circuit. Then, the selected one of the standard voltages of high level is outputted as a gradation-display-use voltage. Meanwhile, One of the standard voltages of low level thus separated by the selector circuit is selected by an Nch-arranged converting section of the D/A converting circuit. Then, the selected one of the standard voltages of low level is outputted as a gradation-display-use voltage. With this arrangement, it is possible to attain miniaturization of a circuit and lower power consumption in a display apparatus which performs gradation display by a voltage modulation method.

Abstract: Electric charges accumulated in organic EL elements are discharged by applying a voltage for reverse-biasing the organic EL elements from at least one of a plurality of current drive circuits, which is connected to a line scanned at least one line ahead of a line to be scanned currently, to the line associated therewith and by connecting cathode connection lines connected to the current drive circuits other than the current drive circuit to be scanned currently and the line scanned at least one line ahead of the current drive circuit to be scanned currently to a predetermined biasing line. Thus, one or several lines accumulate charges corresponding to the reverse-biasing, so that the total power consumption can be reduced.

Abstract: An active type of light emission drive circuit includes a switching element which turns on in response to a scan pulse to allow a data signal to pass therethrough, a capacitive element for holding the data signal passed through the switching element during the ON state of the switching element, and a drive element for supplying a forward drive current to an organic EL element in accordance with the data signal held on the capacitive element to allow the organic EL element to emit light. The switching element is formed of a diode element that turns on by the potential difference between the scan pulse and the data signal when the scan pulse is supplied. A display device incorporating the drive circuit is disclosed.

Abstract: In order to solve a subject that a polycrystalline silicon TFT liquid crystal display apparatus of the driving circuit integration type cannot adopt a technique for reducing the power consumption by an output section, according to the present invention, for example, a sampling latch circuit which composes a horizontal driving circuit (data line driving circuit) of an active matrix type display apparatus is configured such that, when a 1-bit mode (2-gradation mode) is set, a control signal A of the “H” level and another control signal B of the “L” level (low level) are outputted from a 1-bit mode control circuit (16) to place only AND circuits (31-2 and 32-2) corresponding to the most significant bit (MSB) into a passage permitting state to place only latch circuits (35-2 and 36-2) of the MSB into a data writing permitting state (active state) while the remaining latch circuits (35-0, 35-1, 36-0 and 36-1) are placed into a data writing inhibiting state (inactive state).

Abstract: The present invention is directed to provide a driving circuit and driving method for a LCD having high performance of moving image displaying within few amount of memory and downscaled circuit. In the present invention, a voltage applied to a pixel to drive liquid crystal material in the pixel is determined as a voltage with which the transparency of the pixel at the end of the current field becomes the designated transparency. To determine the voltage, a data table for quick response in which output data is stored in correspondence with some of the possible value of a preceding field image data and some of the possible value of the current field image data is employed, and the output data corresponding to the preceding field image data and the current field image data is determined by the data table through linear interpolation. The voltage corresponding to the output data is applied to the pixel.

Abstract: A liquid crystal display device includes a liquid crystal panel having a plurality of pixels disposed in a matrix format, a Y-selecting signal generating unit for selecting one or more pixel rows, an X-selecting signal generating unit for selecting one or more pixel columns, and a tone signal generating unit for generating a tone signal for applying the corresponding tone voltage to tone information of said display data onto each of the pixels.

Abstract: A triodic rectifier switch includes at least one first diode connected to a data line, at least two second diodes connected to a load capacitor, a resistor having one terminal connected to a scan line and the other terminal connected to a node between the first diodes and the second diodes. The triode rectifier switch further includes at least one reset diode having one terminal connected to a node between the first and second diodes and the other terminal connected to a reset line. The second diodes are serially-connected to each other.

Abstract: An active matrix LCD using two-terminal non-linear elements as switching elements is disclosed. This new kind of active matrix LCD comprises a matrix of pixel elements, and each pixel element comprises a first two-terminal non-linear element (5), a second two-terminal non-linear element (5′), and a capacitor (8) for holding the voltage on the LCD cell. When both the first and the second two-terminal non-linear elements are in the conducting state, the voltage on the capacitor (8) can be changed. When both the first and the second two-terminal non-linear elements are in the non-conducting state, the voltage on the capacitor (8) can be maintained. To improve the display uniformity of an active matrix LCD based on two-terminal non-linear elements, the display characteristics of each pixel is measured and stored in a calibration memory (70), and the correct driving parameters for each pixel are calculated based on the display characteristics of the pixel fetched from the calibration memory (70).

Abstract: Writing and holding a data signal to and in a memory circuit in a pixel driving circuit are controlled according to whether a row scanning line and a column scanning line are selected or not. According to a data signal held in the memory circuit, a pixel driver connects a first voltage signal line or a second voltage signal line to a pixel. A reference voltage is applied to a counter electrode of a counter substrate, and display is performed by a potential difference between the reference voltage and a first voltage signal or a second voltage signal.

Abstract: In this invention, as a basic structure, an impedance element is connected in series to a liquid crystal layer (liquid crystal capacitance) of each pixel. The impedance of the impedance element is varied in accordance with a display signal. The resistance values of variable resistance elements are varied in accordance with a display signal being held by a display signal holding means that is provided in each pixel, whereby the impedance of the impedance element varies in accordance with the resistance states of the variable resistance elements. If an AC voltage is applied across the basic structure, an AC voltage produced by voltage division in accordance with the impedance of the impedance element is applied to the liquid crystal layer. Therefore, the AC voltage applied to the liquid crystal layer and hence the gradation level of the liquid crystal layer can be controlled by adjusting the impedance of the impedance element in accordance with a display signal.

Abstract: The present invention provides a driving method for a liquid-crystal-display (LCD) which is driven by a plurality of switching transistors positioned in a matrix. The drain of each switching transistor couples to a first scanning signal via a storage capacitor and to a pixel electrode. The gate and the source of each switching transistor respectively couples to a second scanning signal and a video signal. One step of the driving method is shifting the video signal to have a dc voltage of a first predetermined voltage.

Abstract: An apron and a skirt of a spatial light modulator are each coupled to a substrate by reverse-bias diodes. The spatial light modulator includes liquid crystal material between an array of electrodes and a ground electrode. The apron surrounds the array, and the segmented skirt surrounds the apron. The array, apron, and skirt are formed over the substrate. The reverse-bias diodes provide suitable electrical isolation during normal operation, but dissipate excessive charge that might accumulate during plasma etching as the modulator is being manufactured and that might otherwise induce damage due to electrostatic discharge.

Abstract: The invention prevents crosstalk of preceding data and to improve contrast in a liquid crystal display panel using a two-terminal type non-linear element such as a MIM element even when a charge and discharge drive method is used as a method of driving the liquid crystal display panel. A scanning signal is formed of a signal in a charging mode and a signal a discharging mode. A charging period in which the voltage value of a first selecting voltage in the charging mode is applied is set as a predetermined period in a first horizontal period. An overcharging period in which the voltage value of a precharge voltage in the discharging mode is applied is set as the first half of a second horizontal period vertical period after the first horizontal period, and a discharging period in which a second selecting voltage is applied is set as the second half of the second horizontal period.

Abstract: A source driver 1 according to the present invention is comprised of a bias circuit 3 and an output circuit 2. In the output circuit 2, a differential unit 21 amplifies the difference between two input signals received through input terminals IN1 and IN2. An output unit 22 made up of the transistors Q5, Q8, and Q9, and a capacitor C, receives a signal from the differential unit 21, amplifies it, outputting it to a liquid crystal display (not shown) via a variable-resistance unit 25 with analog switches S1 and S2. A selection circuit 26 causes each of the analog switchs S1 and S2 to be activated or deactivated. A bias current circuit 23 changes a current flowing through a differential amplification circuit made up of the transistors Q1 to Q4. A bias current changing circuit 24 changes a bias current flowing through a circuit made up of a transistor Q5 and a capacitor C.

Abstract: The present invention relates to a method of driving an active-matrix type of liquid crystal display device that has a plurality of row electrodes to which a scanning signal is applied, a plurality of column electrodes to which a data signal is applied, and a plurality of picture elements (pixels) formed at a plurality of intersections between these row and column electrodes, each of these pixels comprising a liquid crystal layer and a two-terminal element having non-linear resistance characteristics connected in series therewith by means of applying a voltage of a difference signal between a scanning signal and a data signal to the pixels. A compensatory voltage is applied to each pixel immediately before a data write period during which the liquid crystal layer of the pixel is charged with a data charge voltage corresponding to a display gradation.

Abstract: An active matrix display device of the kind having two terminal non-linear switching devices (15) such as thin film diodes connected in series with the electro-optic, e.g. LC, display elements (12) between associated row and column address conductors (16, 17), in which the display elements are driven using pulse width modulated data signals and a wide range of grey-scale levels is achieved by using selection signals whose form is determined such that the current flow through the switching devices upon selection is controlled in an appropriate manner. To this end, the selection signals can be shaped to provide a more constant charging level the selection period.

Abstract: A system and method for driving a thin film diode (TFD) inclusive AMLCD or imaging device (e.g. x-ray imager) includes providing each pixel with a pair of select lines and a single data line. Drive schemes are provided which increase the circuits tolerance for spacial and temporal variations in diode (e.g. MIM diode) characteristics, improve response time, increase the circuit's tolerance for RC delays on data lines, and reduces the potential for crosstalk or image retention. In certain embodiments, where each pixel includes a pair of select lines, and a single data line, the select voltage on the first select line alternates between VS+Voffset and VS−Voffset for subsequent frames, while the select voltage on the other select line alternates between −VS+Voffset and −VS−Voffset for subsequent frames, thereby allowing voltage at the common node to be added to the data voltage.

Abstract: A system and method for driving a MIM diode inclusive AMLCD includes providing each pixel with a pair of select lines and a single data line. Drive schemes are provided which increase the circuits tolerance for spacial and temporal variations in MIM device characteristics, improve response time, increase the circuit's tolerance for RC delays on data lines, and reduces the potential for crosstalk or image retention. in certain embodiments, where each pixel includes a pair of select lines, and a single data line, the select voltage on the first select line alternates between VS+Voffset and VS−Voffset for subsequent frames, while the select voltage on the other select line alternates between −VS+Voffset and −VS−Voffset for subsequent frames, thereby allowing voltage at the common node to be added to the data voltage. Accordingly, a lesser data voltage swing is required, which reduces the cost and complexity of the overall circuit.

Abstract: A structure of a liquid crystal device cutting down the power consumption is materialized. In a liquid crystal display device comprising at least two display portions of a dot matrix portion and an icon portion in the same panel, drive is carried out such that both of the display portions are displayed in a normal operation mode and, only the icon portion is displayed in a power-saving operation mode such as when the liquid crystal display device is waiting for operation or is standby. In the power-saving operation mode, the duty ratios of all of the display portions in the power-saving operation mode are lower than those in the normal operation mode, and time shared drive waveforms using the power source voltage as it is which does not require bias voltage are applied.

Abstract: An integrated circuit for driving a flat display device having a plurality of scanning electrodes is provided. The integrated circuit includes a plurality of output circuits each of which includes a charging device and a discharging device that control and drive a corresponding scanning electrode of the flat display device, and a charging diode and a discharging diode that cause an external common control device to control and drive the scanning electrodes. In this integrated circuit, an electrode portion constituting an output terminal of the output circuit is located between the charging diode and the discharging diode.

Abstract: A method of driving a matrix display device having an array of electro-optic display elements (12) each of which is connected in series with a two terminal non-linear device (15), such as a MIM, between associated row and column address conductors (16,17), in which the display elements are driven in a reset mode of operation by applying to the column address conductors data signals (D) and to the row address conductors selection signals (Vs) and reset signals (Va) to correct for non-uniformities in the characteristics of the non-linear devices, and in which in a row address period (T1) a data signal (D) applied to a column conductor is preceded by its inverse (D), a reset signal (Va) is applied during the application of the inverse data signal, and a selection signal (Vs+) is applied during the application of the data signal in the latter part of the row address period in order to minimize differences in ageing of the non linear devices.

Abstract: Liquid crystal display devices include a first row of viewable liquid crystal display cells having data inputs electrically connected to a plurality of data lines (D1-Dn), control gates commonly connected to a first gate line (e.g., G1) and storage capacitors (Cst) having first electrodes electrically connected to a zeroth gate line (e.g., G0). A second row of viewable liquid crystal display cells are also provided having data inputs electrically connected to a plurality of data lines (D1-Dn), control gates commonly connected to a second gate line (e.g., G2) and storage capacitors (Cst) having first electrodes electrically connected to a first gate line (e.g., G1). Moreover, to maintain the RC delay value of the zeroth gate line at a level equal to the RC delay values associated with the higher order gate lines (e.g.

Abstract: A display device which is based on a number of pixels (2) which are arranged in rows and columns, each pixel having a two-pole switching element (3) between an electrode (13) of a pixel and a row electrode (5), and a second two-pole switching element (23) between said electrode of the pixel and an auxiliary row electrode (25) used for resetting, auxiliary row electrodes for resetting having a common connection (24) for a plurality of rows of pixels.

Abstract: A matrix display device comprising a row and column array of display elements (14), e.g. LC display elements, each of which is connected in series with a two terminal non-linear device (15), such as a MIM, between associated row and column address conductors (16,17) and drive means (20,22,25) for applying drive voltages to the picture elements comprising a scanning signal circuit (20) and a data signal circuit (22) for applying selection signals and data signals respectively to the sets of address conductors, in which a sensing circuit (40) provides a control signal (V.sub.1) indicative of current flowing in one, or more, address conductor (16) of one set during the application of selection signals to that conductor which determines the drive voltages applied to the picture elements, preferably by adjustment of the selection signal level, so as to compensate for changes over time in the threshold characteristics of the non-linear devices. Four or five level scanning signal drive schemes may be used.

Abstract: In a display device of the reset type, drive asymmetries in mutually offset picture electrodes (6) occur due to capacitive crosstalk differences between these picture electrodes (6) and column electrodes, and consequently lead to artifacts.These crosstalk differences are eliminated by choosing a layout for a picture electrode (6) and the surrounding electrodes (8, 18) and switching elements (9, 19), which layout, viewed in consecutive rows, is mirror-symmetrical.

Abstract: In a picture display device driven with an active matrix the voltage across the pixels (12) is accurately adjusted by discharging or charging the associated capacitances, if necessary, first to beyond the transition range (17) in the transmission/voltage characteristic.