Abstract: An object of the invention is to provide a thin-film cathode having a base electrode, an upper electrode and an electron accelerator disposed therebetween and made of an insulator or a semiconductor, wherein a diode current rises with a lower threshold voltage that that in the background art, so that a diode current required for electron emission can be secured with a low voltage, and to obtain an image display device long in life and low in power consumption. Platinum-group metal (Group VIII), noble metal belonging to Group Ib, or a laminated film, a mixed film or an alloy film of those materials containing an alkali metal oxide, an alkaline earth metal compound or a compound of transition metal belonging to Group III to VII from the interface with an electron accelerator to the surface is used as an upper electrode.

Abstract: An image display device is provided in which the screen is partitioned into upper and lower areas both being driven simultaneously. Image data read out of a frame memory #1 is displayed in the upper area of the present screen and at the same time, image data of the preceding screen read out of a frame memory #3 is displayed in the lower area of the present screen. In the next screen, image data read out of a frame memory #2 is displayed in the upper area of the next screen and image data read out of the frame memory #1 is displayed in the lower area of the next screen. In this manner, the image data read out of the frame memory #1 is displayed consecutively over the present screen and the next screen.

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: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. Two kinds of the OLEDs are provided. One is an OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Another comprises a region of the LE layer formed on an electrode of capacitor connected to the TFTs to control the light-emitting element. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.

Abstract: Specified thin-film transistors 26 and 27 are caused to conduct by a gradation signal inputted in control circuits 24 and 25, and resistors with a conduction resistance of activated transistors are inserted between any of reference voltages V0, V2, and V4 and an output terminal T1 or between any of reference voltages V1 and V3 and an output terminal T2, and a pair of thin-film transistors 29 in a sampling circuit 23 are caused to conduct simultaneously in sync with the gradation signal. If a signal line SL1 is selected, reference voltages V0, V2, or V4 and V1 or V3 are applied to the signal line SL1, either as they are or as divided by the conduction resistance of the activated thin-film transistors, by using a junction point between the sampling circuit 23 and signal line SL1 as a voltage dividing point.

Abstract: The present invention provides an image display device free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge. On the outermost periphery of a display region, there are provided a bottom electrode 11 serving as data line, a scan line bus 21 serving as scan line, and dummy potential fixing electrodes 11D1, 11D2, 21D1 and 21D2 not contributing to image display, and these are connected with electrodes 70 and 80 with low impedance and constant potential.

Abstract: For inhibiting generation of pixels that could not be displayed in a line in a display screen of an electron emission display comprising the pixels each provided with an electron source in which a first electrode at a signal line side and a second electrode at a scanning line side are joined through an isolating layer (electron acceleration layer), the present invention cuts off continuity between the first electrode and the second electrode which are short-circuited caused by a defect, so that the electron source with the defect is isolated from other electron sources. In the electron source with a defect, for example, a portion of the second electrode surrounding the above-mentioned defect thereof is excised by laser.

Abstract: Input display data (D0, D1, D2) are converted into currents ij which are allowed to flow into respective pixels by a data/current conversion part 66, electric currents IN at end portions of a row wiring are calculated by a current IN calculation circuit 68-2 using the currents ij, and a voltage drop VN at an end portion of the row wiring is calculated by a voltage drop VN calculation circuit 68-4 using the current IN. On the other hand, the sum of the currents ij is calculated by a current ij calculation circuit 68-6, and a current Im?1 which flows between the pixels is calculated by a current Im?1 calculation circuit 68-7 using the sum of the currents ij and the currents IN.

Abstract: To provide a display device capable of displaying a moving picture with high definition and at high speed. An image display system includes: an image display unit; and a control unit. The control unit has: a block discrimination circuit portion; an image processing portion; a storage portion; and a synchronizing signal generation portion. The block discrimination circuit portion discriminates a moving picture or a still picture to process the image information in accordance with the discriminated result, in which the number of gradations for the image information processed when the discriminated result is the moving picture is lower than when the discriminated result is the still picture. Thereby, the high definition image display and the high speed moving picture display can be effected by reducing the information with lower degree of recognition.

Abstract: The output lines are connected to the signal lines. The gradation voltage lines are arranged to intersect the output lines. Two switch drive lines are provided for one gradation voltage line. The trigger lines are provided in parallel with the output lines. The switch circuits are provided near the intersections at which those wiring lines intersect each other. The decoder to which the multi-tone image data is fed produces data of “1” on one single switch drive line, and data of “0” on the other switch drive lines. The trigger pulses are sequentially supplied to the trigger lines. Data of “1” is stored in the switch circuit connected to the switch drive line of “1”. The gradation voltages from the gradation voltage lines connected to the switch circuit in which data of “1” is stored are supplied via the output lines to the signal lines.

Abstract: The present invention provides OLEDs of the top emission type comprising organic light-emitting (LE) elements by preventing the problems such as the widening of the power lines, the reduction in the aperture ratio caused by the widening of the upper and the lower capacitor electrodes and the short circuit between the upper and the lower electrodes caused by the roughness of the flattening layers. An OLED comprising a region of LE layer sandwiched between the upper and lower electrodes is formed on a power line of TFT for driving the pixel. Accordingly, without forming a flattening layer on the light-emitting layer, there is no electric short circuit between the lower electrode and the upper electrode.

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: Both a display device for displaying a uniform image on the front surface of a FED panel, and a method for manufacturing the same are disclosed. The display device includes a glass substrate which forms thereon signal wirings and MIM elements connected to thin-film scanning wirings, and an opposed substrate which forms thereon phosphor layers for performing light emissions by electron beams from the MIM elements. In the display device and the method for manufacturing the same, low-resistance wiring patterns formed separately on a film substrate are transferred onto the thin-film scanning wirings and upper electrodes. This transfer allows low-resistance scanning-wiring buses to be fixedly bonded thereon by electrically-conductive adhesive layers.

Abstract: This invention provides a flat-panel display apparatus adapted to reduce the electric charges stored into fluorescent materials, and to allow spacers to be arranged easily and accurately, and capable of displaying high-quality images by improving color purity of the colored light emitted toward the viewing side. The display apparatus according to this invention has a rear substrate 1 including an electrical insulating substrate 10 on which are formed a large number of cold-cathode elements 19 for emitting electrons, a display substrate 101 including a light-transmissive substrate 110 which is disposed facing the rear substrate 1 and on which are formed the fluorescent materials 111 that emit light when excited by the electron beams sent from the cold-cathode elements 19, and a frame member 116.

Abstract: To prevent an n-channel thin-film transistor from being deteriorated by hot holes generated in a gate-negative pulse mode. A thin polysilicon film 10 is provided with a p-type semiconductor region 13 in contact with a channel region 14. The p-type semiconductor region 13 is electrically connected to nowhere except the channel region 14. Holes induced on the surface due to a gate-negative pulse are further supplied from the p-type semiconductor region 13. An electric field established by the gate-negative pulse is relaxed by the holes, fewer hot holes are injected into the gate oxide film, and the TFT characteristics are less deteriorated.

Abstract: A liquid crystal display apparatus having a level conversion circuit in which a high speed operation can be attained and also a small transistor capacity can be obtained is provided. In the liquid crystal display apparatus, a signal circuit for driving pixel elements of a display unit and a scanning circuit are provided. The level conversion circuit is constituted of a first and a second transistors 111 and 112 in which a respective gate electrodes is connected to a first bias voltage power supply, and a third and a fourth transistors 121 and 122 in which a respective gate electrodes is connected to a second bias voltage power supply and a respective source electrodes is connected to a power supply.

Abstract: An organic EL display module includes a plurality of current supply lines extending to a first side of a substrate from a display region, a currently supply bus line connecting with a plurality of current supply lines on a peripheral region of the first side of the substrate, and a terminal pad formed on a peripheral region of a second side of the substrate which is opposite to the first side of the substrate. A current supply wiring connects the current supply bus line and the terminal pad, and the current supply wiring is provided on a peripheral region of a third side which is adjacent to the first and second side.

Abstract: To provide a display device capable of displaying a moving picture with high definition and at high speed. An image display system includes: an image display unit; and a control unit. The control unit has: a block discrimination circuit portion; an image processing portion; a storage portion; and a synchronizing signal generation portion. The block discrimination circuit portion discriminates a moving picture or a still picture to process the image information in accordance with the discriminated result, in which the number of gradations for the image information processed when the discriminated result is the moving picture is lower than when the discriminated result is the still picture. Thereby, the high definition image display and the high speed moving picture display can be effected by reducing the information with lower degree of recognition.

Abstract: A display module includes a pixel disposed in respective intersections between a plurality of scanning lines and a plurality of data lines, which lines are aligned in a matrix, and a current supply line that supplies electric current to the pixel, the pixel includes a data storage device for storing a data signal supplied from the data lines, and an emitting device that emits light by the electric current supplied by the current supply line according to the data signal stored in the data storage device. One terminal of the data signal storage device is connected to one of the scanning lines placed anteriorly of to the pixel that is being selected.

Abstract: This display module performs a high quality display by preventing the effect resulting from a residual charge of a data signal in the previous scanning remaining in a capacitor of a pixel circuit.