Abstract: An active type display panel comprises a plurality of pixel sections each having a series circuit constituted by a light emitting element and a drive element for supplying a drive current to the light emitting element, a pair of power supply lines which connect the series circuits of the pixel sections in parallel, and a plurality of measurement lines. Each of the pixel sections includes a switch element between a point connecting the light emitting element and the drive element, and one line of the measurement lines. A display device, in which the display panel is used, detects the voltage across the terminals of the light emitting element and controls the drive element such that the voltage across these terminals is a predetermined voltage.

Abstract: A driving apparatus for a multi-color light-emitting display panel including drive lines and scanning lines intersecting with each other, and capacitive light-emitting elements which have polarities connected to the scanning lines and the drive lines at the intersections and which are divided into a plurality of types by a color of light emission, the capacitive light-emitting elements of the same type being arranged on each drive line. The drive apparatus comprises a scanning circuit for selectively supplying a first potential and a second potential higher than the first potential to each of the scanning lines, and a drive circuit for selectively supplying a drive current from a current source and a third a potential for an offset voltage not higher than a light emission threshold voltage of the element to each of the drive lines, the drive current and the third potential are variable.

Abstract: A drive unit which can prevent the decrease of the luminance of a self-luminous device due to degradation or a change is electric characteristic thereof. The drive unit has a semiconductor device having an electric characteristic almost the same as the that of the self-luminous device, and drives the semiconductor device in accordance with the frequency of light emission of the self-luminous device. The device generates a characteristic change detection signal indicating the degree of a change in an electric characteristic of the semiconductor device, and supplies the self-luminous device with a drive signal having a current level or a voltage level based on the characteristic change detection signal.

Abstract: A light emitting display device having a plurality of light emitting elements connected to intersecting points of a plurality of anode lines and cathode lines arranged in a matrix. Either one of the anode lines and the cathode lines are used as scanning lines, and the others are used as driving lines. While one of the scanning lines is scanned during a scanning period, a driving source is synchronously connected to one of the driving lines so that a light emitting element connected to an intersecting point of the one scanning line and the one driving line is caused to emit light. Immediately after the scanning period of the one scanning line is started, a first driving source is connected to the one driving line, and subsequently, in exchange for the first driving source, a second driving source is connected to the one driving line.

Abstract: A coil spring contact connector (C) includes a plurality of coil spring contacts (1) and an insulating holder (2) holding the coil spring contacts arranged at intervals. Each coil spring contact has a pair of end contact coils (10) to be brought into contact with a terminal electrode (6c), and middle contact coils (12) radially offset relative to the end contact coils (10) so as to be brought into contact with another terminal electrode (5c). The holder is provided with openings through which contact parts of the end and the middle contact coils project outside, respectively, restrains each coil spring contact (1) from axial deformation and axial movement, and allows each coil spring contact (1) to be deformed in an offset direction thereof.

Abstract: A drive device for a light-emitting panel that is capable of adjusting the anode power source voltage to be applied to anode leads of the light-emitting panel to a suitable voltage value with low power consumption and in a reliable fashion. A prescribed anode lead of the anode leads of the light-emitting panel is designated as the anode lead that is to be the subject of detection. The voltage value on this anode lead which is the subject of detection is input as the forward voltage value only while display is being performed in accordance with prescribed information data to cause drive current to be supplied to at least the anode lead that is the subject of detection, and the anode power source voltage is adjusted in accordance with this forward voltage value.

Abstract: A manufacturing apparatus for manufacturing an organic EL display panel, includes a thermal head having a heating region covering at least part of a display region to be constituted by a plurality of organic EL elements to be formed on the substrate, with a space maintained between the display region and the heating region. The organic EL display panel has a plurality of organic EL elements arranged on a substrate, each of the organic EL elements being formed of at least one organic layer each of which contains a light-emitting layer sandwiched by a pair of electrodes. The apparatus also includes a deposition material sheet formed of a heat-resistant sheet having one main surface thereof coated with a thin layer of a deposition material and another main surface thereof in contact with thermal head, and a support mechanism for causing the thin layer on the deposition material sheet and the substrate to be opposed to each other with a space maintained therebetween.

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 method of driving a capacitive light-emitting element display device which accomplishes a wide adjustable range for the luminance of a panel and reduced power consumption. The capacitive light-emitting element display device has a plurality of capacitive light-emitting elements arranged at a plurality of intersections of drive lines and scanning lines and connected between the scanning lines and the drive lines. The scanning lines are connected to one of first and second potentials which are different from each other. The drive lines are connected to either the lower potential of the first and second potentials or a drive source.

Abstract: A light emitting circuit and a display device which supply a forward driving current to an organic electroluminescence element in response to generation of a light emit command to cause to light-emit the organic electroluminescence element, and supply a charging current to the organic electroluminescence element after the generation of the light emit command to charge the capacity component of the organic electroluminescence element.

Abstract: A capacitive light emitting device panel having a plurality of pixels each of which is constructed by a red light emitting unit, a green light emitting unit, and a blue light emitting unit. A ratio of areas of light emitting surfaces of the red light emitting unit, green light emitting unit, and blue light emitting unit is set so that voltage differences among peak voltages of applied voltages to the red light emitting unit, green light emitting unit, and blue light emitting unit lie within a predetermined voltage range.

Abstract: An EL display unit which can realize an appropriate image display corresponding to an input video signal in a simple structure. N driving transistors individually supplying drive currents to N electroluminescence elements respectively. The driving transistors have channel widths and/or channel lengths to generate the drive currents in a ratio in which each of the N electroluminescence elements is driven to emit light at a desired intensity.

Abstract: A coil spring contact connector (C) includes a plurality of coil spring contacts (1) and an insulating holder (2) holding the coil spring contacts arranged at intervals. Each coil spring contact has a pair of end contact coils (10) to be brought into contact with a terminal electrode (6c), and middle contact coils (12) radially offset relative to the end contact coils (10) so as to be brought into contact with another terminal electrode (5c). The holder is provided with openings through which contact parts of the end and the middle contact coils project outside, respectively, restrains each coil spring contact (1) from axial deformation and axial movement, and allows each coil spring contact (1) to be deformed in an offset direction thereof.

Abstract: A driving apparatus for a capacitive light emitting element display panel which comprises a driving apparatus for supplying a first predetermined potential to one selected scanning line, supplying a second predetermined potential higher than the first predetermined potential to scanning lines other than the one scanning line, supplying a driving current to a light emission drive line corresponding to a capacitive light emitting element driven to emit light, and supplying a third predetermined potential higher than the first predetermined potential and lower than a light emission threshold voltage to drive lines other than the light emission drive line, wherein the third predetermined potential is generated from a current discharge terminal of a voltage source connected to a predetermined load circuit for supplying a power supply voltage to the predetermined load circuit.

Abstract: A method of driving which makes it possible to drive a matrix type display panel for light emittion with low power consumption. In performing sub-field driving in which each of light-emitting devices serving as pixels in each of sub-fields constituting the display period of one field of a video signal is caused to emit light for a period associated with the sub-field according to pixel data, the number of the sub-fields is changed in accordance with the number of gray scale levels of an image represented by the video signal.

Abstract: A light emitting display device having a plurality of light emitting elements connected to intersecting points of a plurality of anode lines and cathode lines arranged in a matrix. Either one of the anode lines and the cathode lines are used as scanning lines, and the others are used as driving lines. While one of the scanning lines is scanned during a scanning period, a driving source is synchronously connected to one of the driving lines so that a light emitting element connected to an intersecting point of the one scanning line and the one driving line is caused to emit light. Immediately after the scanning period of the one scanning line is started, a first driving source is connected to the one driving line, and subsequently, in exchange for the first driving source, a second driving source is connected to the one driving line.

Abstract: A drive device for a light-emitting panel that is capable of adjusting the anode power source voltage to be applied to anode leads of the light-emitting panel to a suitable voltage value with low power consumption and in a reliable fashion. A prescribed anode lead of the anode leads of the light-emitting panel is designated as the anode lead that is to be the subject of detection. The voltage value on this anode lead which is the subject of detection is input as the forward voltage value only while display is being performed in accordance with prescribed information data to cause drive current to be supplied to at least the anode lead that is the subject of detection, and the anode power source voltage is adjusted in accordance with this forward voltage value.

Abstract: An active matrix display apparatus includes a light-emitting panel including a plurality of light-emitting devices arranged in a matrix configuration and driving devices for selectively allowing each of the plurality of light-emitting devices to emit light. A control circuit is provided for controlling the driving devices in accordance with an input video signal. A light adjustment signal generating circuit for generating a light adjustment signal to designate a display luminance of the light-emitting panel. A variable power source supplies an electric power variable with a magnitude according to the light adjustment signal to the plurality of light-emitting devices.

Abstract: An insulating holder has a first face and a second face. The insulating holder is formed with a first hole having a first diameter at the first face, and a second hole having a second diameter larger than the first diameter and extended from the second face so as to communicate with the first hole. A plate-shaped conductive terminal has a base portion, at least one pair of guide portions extended from the base portion so as to define a concave portion therebetween. The terminal is fitted into the second hole such that the concave portion faces the first hole. A conductive pin includes a plunger portion having a diameter smaller than the second diameter and a base portion having a diameter substantially identical with the second diameter. The base portion of the pin is fitted with the guide portions so as to be slidable along the concave portion.

Abstract: A light emitting display device having a plurality of light emitting elements connected to intersecting points of a plurality of anode lines and cathode lines arranged in a matrix. Either one of the anode lines and the cathode lines are used as scanning lines, and the others are used as driving lines. While one of the scanning lines is scanned during a scanning period, a driving source is synchronously connected to one of the driving lines so that a light emitting element connected to an intersecting point of the one scanning line and the one driving line is caused to emit light. Immediately after the scanning period of the one scanning line is started, a first driving source is connected to the one driving line, and subsequently, in exchange for the first driving source, a second driving source is connected to the one driving line.