摘要:
A backlight device comprises a surface luminescent body and a light control section. The surface luminescent body includes a surface luminescent layer and first and second electrode layers sandwiching the surface luminescent layer. The light control section supplies a drive signal to the first and second electrode layers to cause the surface luminescent body to emit light. At least one of the first and second electrode layers is divided into a plurality of electrode pieces. The light control section supplies the drive signal individually to the plurality of electrode pieces.
摘要:
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.
摘要:
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.
摘要:
An antenna structure obtains a snap-in antenna having a short signal transmission path, it being possible to switch between an antenna of a case and an outside antenna with low transmission loss. When an antenna side attachment section is inserted into an antenna attachment hole, a plunger is elastically forced so as to protrude in a direction intersecting with the insertion direction of a spring connector provided on a circuit board and elastically contacts a conductive member which is electrically connected to an antenna base. A small through-hole is provided in the conductive member at the contact position; a second spring connector is provided on the antenna attachment section and has a second plunger, one end of the plunger passing through the through-hole and being elastically forced toward the other side so as to project thereto; a coaxial connector containing section is provided at the other end and a coaxial connector can be inserted therein. A coaxial connector insertion hole is provided in the case facing the coaxial connector containing section. When the coaxial connector is inserted, a central conductor thereof applies a pressing force to the plunger of the spring connector, thereby separating it from the conductive member.
摘要:
The present invention provides an electroluminescent display which allows each of Red (R), Green (G), and Blue (B) light-emitting elements to be built up simultaneously for emitting light at predetermined instantaneous luminance in order to improve the reproducibility of gradations when addressed by a pulse-width modulation drive. The electroluminescent display has a charging means for charging at least any one of the R, G, and B light-emitting elements in the duration between the end of a scan and the start of the subsequent scan. The charging means charges different amounts of charge to each of the R, G, and B light-emitting elements. While scanning a scanning line, a power supply is connected to a predetermined drive line in response to the scan on the scanning line, hereby causing a light emission by the light-emitting element connected to the intersection of the scanning line and the drive line.
摘要:
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.
摘要:
An active type of display panel arranged with light-emitting elements such as organic electroluminescent elements, capable of effecting correct tonal display even during a long-time use, a display device using the display panel and a method of driving the display panel. In each of pixel portions on the display panel, a driving element is activated according to a data signal, to supply a light-emitting element with a drive current in an amount corresponding to the data signal. The data signal is corrected such that the drive current becomes equal to a current corresponding to a light-emitting luminance represented by the data signal.
摘要:
A conductive portion of a display panel includes a plurality of strip electrodes each provided for at least one of the scan lines and electrically isolated from one another. A switch circuit is provided for selectively connecting each of the plurality of strip electrodes to the power supply. A reverse bias voltage generating circuit generates reverse bias voltage in a direction opposite to a voltage applied to light-emitting elements when emitting light, and a reverse bias voltage applying circuit selectively applies the reverse bias voltage to the plurality of light-emitting elements via the plurality of strip electrodes.
摘要:
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.
摘要:
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. In synchronism with a scanning period in which selected one of the scanning lines is connected to the lower potential of the first and second potentials, selected one of the drive lines is connected to the drive source to force a capacitive light-emitting element associated therewith to emit light, and simultaneously, the scanning lines, not selected, are connected to the lower potential of the first and second potentials. The higher potential of the first and second potentials is made adjustable.