Abstract: A backlight unit shortens the necessary time from the time immediately after the turn on to the time the emitted light is converged to a predetermined chromaticity while the quality of time-varying images is improved. Under the control of the backlight controller section, the Light-Emitting Diodes (LEDs), which are assigned to the respective light-emitting regions of the light-emitting surface, are driven to emit lights sequentially in the predetermined scanning light-emitting periods for the scan type lighting and the additional light-emitting periods in a single frame, responsive to the write scanning of an image signal to the LCD panel. The additional light-emitting periods are outside a corresponding one of the scanning light-emitting periods. In each additional light-emitting period, the LEDs emit light in synchronization with the supply of the optical leakage preventing signal (e.g., the black inserting signal) to the LCD panel.

Abstract: An edge-light type backlight unit reduces the color unevenness on the display screen caused by the arrangement of point-shaped light sources (e.g., LEDs) in a point-shaped light source unit comprising a set of point-shaped light sources aligned. The backlight unit includes at least one point-shaped light source unit having point-shaped light sources arranged in a single direction in a predetermined order, the light sources emitting monochromatic light of different colors. The unit further comprises a first optical filter for limiting or controlling transmission of the monochromatic light emitted from one of the light sources disposed at one end of the light source unit, and a second optical filter for limiting or controlling transmission of the monochromatic light emitted from another of the light sources disposed at the other end thereof. The first and second filters are selectively formed on a first or second light guide plate or a diffusing plate.

Abstract: The object of present invention is to provide a image display device with a simple constitution and a method for driving the image display device.

Abstract: Provided is a method for driving an electroluminescence display panel in which data electrode lines and scan electrode lines cross each other with predetermined gaps to form electroluminescence cells in the crossing areas. The method includes performing a preliminary charging stage in which the signal input terminals of the data electrode lines are switched and electrically disconnected from a data driving unit, and the other terminals of the data electrode lines are switched and electrically connected to one another in the initial stage of each parallel driving period. The preliminary charging stage is performed in the following parallel driving period when the data of the present parallel driving period and the data of the following parallel driving period are different.

Abstract: The object of present invention is to provide a image display device with a simple constitution and a method for driving the image display device.

Abstract: A backlight unit shortens the necessary time from the time immediately after the turn on to the time the emitted light is converged to a predetermined chromaticity while the quality of time-varying images is improved. Under the control of the backlight controller section, the Light-Emitting Diodes (LEDs), which are assigned to the respective light-emitting regions of the light-emitting surface, are driven to emit lights sequentially in the predetermined scanning light-emitting periods for the scan type lighting and the additional light-emitting periods in a single frame, responsive to the write scanning of an image signal to the LCD panel. The additional light-emitting periods are outside a corresponding one of the scanning light-emitting periods. In each additional light-emitting period, the LEDs emit light in synchronization with the supply of the optical leakage preventing signal (e.g., the black inserting signal) to the LCD panel.

Abstract: An image display apparatus includes an image display section in which a plurality of light emitting elements are arranged in a matrix at intersections of a plurality of scan lines and a plurality of data lines. A control circuit selects one of modes as an operation mode in response to a mode switching signal, and outputs a data signal and a scan control signal based on an image signal to be displayed and the selected mode. A row driving section is connected to the plurality of scan lines to sequentially drive the plurality of scan lines based on the scan control signal in a unit determined based on the operation mode. A column driving section is connected to the plurality of data lines to sequentially drive the plurality of data lines based on the data signal. In this way, an image corresponding to the image signal is displayed on the image display section.

Abstract: An illumination system that makes it possible to generate light with less color irregularity with a simple structure while restraining the increase of size is provided. A tube-shaped reflector having a tube-shaped wall whose inner surface is reflective is provided. The wall includes an aperture extending along a longitudinal axis of the reflector. In the reflector, plural sets of LEDs are arranged, where colors of light to be emitted from the LEDs in each set are different (for example, red, green, or blue LEDs are used for each set). The LEDs in each set are arranged along the longitudinal axis of the reflector to form a linear light source. A collecting lens is fixed to the reflector in such a way as to fill the aperture of the reflector.

Abstract: A photosensor section is disposed in a vicinity of the center of a shorter side of an LED panel including plural arrays of LED units in each of which plural LEDs are arranged. A gain of the photosensor section is adjusted on the basis of gain correction information set in advance according to the position of each LED unit. Thereby, the calibration of the photosensor section is performed. While the photosensor section, which has been adjusted in this manner, sequentially detects the amounts of light from the LED units, a backlight unit emits backlight toward a liquid crystal display panel.

Abstract: An edge-light type backlight unit reduces the color unevenness on the display screen caused by the arrangement of point-shaped light sources (e.g., LEDs) in a point-shaped light source unit comprising a set of point-shaped light sources aligned. The backlight unit includes at least one point-shaped light source unit having point-shaped light sources arranged in a single direction in a predetermined order, the light sources emitting monochromatic light of different colors. The unit further comprises a first optical filter for limiting or controlling transmission of the monochromatic light emitted from one of the light sources disposed at one end of the light source unit, and a second optical filter for limiting or controlling transmission of the monochromatic light emitted from another of the light sources disposed at the other end thereof. The first and second filters are selectively formed on a first or second light guide plate or a diffusing plate.

Abstract: A driving circuit of a display to display full color by light emitting elements is provided which can attain sufficient display characteristics even when there is a difference in characteristics of the light emitting elements and can lower power consumption. The driving circuit is used for a stripe type display in which electrical characteristics of a red light emitting organic EL (Electroluninescence) element differ greatly from those of green and blue light emitting organic EL elements in which these three light emitting elements are arranged repeatedly in a column direction in a manner that the red light emitting element is sandwiched by the green and blue light emitting elements and the driving circuit is made up of driving sections each having driving capability enough to drive the red light emitting organic EL element and other driving sections each having driving capability enough to drive the green and blue light organic EL elements.

Abstract: An image display apparatus includes an image display section in which a plurality of light emitting elements are arranged in a matrix at intersections of a plurality of scan lines and a plurality of data lines. A control circuit selects one of modes as an operation mode in response to a mode switching signal, and outputs a data signal and a scan control signal based on an image signal to be displayed and the selected mode. A row driving section is connected to the plurality of scan lines to sequentially drive the plurality of scan lines based on the scan control signal in a unit determined based on the operation mode. A column driving section is connected to the plurality of data lines to sequentially drive the plurality of data lines based on the data signal. In this way, an image corresponding to the image signal is displayed on the image display section.

Abstract: An illumination system that makes it possible to generate light with less color irregularity with a simple structure while restraining the increase of size is provided. A tube-shaped reflector having a tube-shaped wall whose inner surface is reflective is provided. The wall includes an aperture extending along a longitudinal axis of the reflector. In the reflector, plural sets of LEDs are arranged, where colors of light to be emitted from the LEDs in each set are different (for example, red, green, or blue LEDs are used for each set). The LEDs in each set are arranged along the longitudinal axis of the reflector to form a linear light source. A collecting lens is fixed to the reflector in such a way as to fill the aperture of the reflector.

Abstract: A lighting device of backlight type that transmits light of a plurality of light emitting elements from a display section includes a plurality of driving sections that drive the plurality of light emitting elements; and drive switching section, provided between the plurality of driving sections and the plurality of light emitting elements, for switching the drive of the plurality of light emitting elements alternately at every fixed cycle.

Abstract: A picture displaying apparatus that includes scanning lines to which scanning signals are inputted, data lines to which data signals are inputted, and a light emission element present at every intersection of scanning lines and data lines. The designated picture displaying device also consists of a display unit composed of light emission elements and a memory unit containing memory cells that store single units of display data. The units of display data are read from the memory unit in different orders and then written to the picture displaying unit such that the picture or content is different for each predetermined frame or frames. A plurality of display data corresponding to different display contents is generated without a calculating circuit when the screen saver function is activated.

Abstract: Provided is a method for driving an electroluminescence display panel in which data electrode lines and scan electrode lines cross each other with predetermined gaps to form electroluminescence cells in the crossing areas. The method includes performing a preliminary charging stage in which the signal input terminals of the data electrode lines are switched and electrically disconnected from a data driving unit, and the other terminals of the data electrode lines are switched and electrically connected to one another in the initial stage of each parallel driving period. The preliminary charging stage is performed in the following parallel driving period when the data of the present parallel driving period and the data of the following parallel driving period are different.

Abstract: An image display apparatus includes an image display section in which a plurality of light emitting elements are arranged in a matrix at intersections of a plurality of scan lines and a plurality of data lines. A control circuit selects one of modes as an operation mode in response to a mode switching signal, and outputs a data signal and a scan control signal based on an image signal to be displayed and the selected mode. A row driving section is connected to the plurality of scan lines to sequentially drive the plurality of scan lines based on the scan control signal in a unit determined based on the operation mode. A column driving section is connected to the plurality of data lines to sequentially drive the plurality of data lines based on the data signal. In this way, an image corresponding to the image signal is displayed on the image display section.

Abstract: The object of present invention is to provide a image display device with a simple constitution and a method for driving the image display device.

Abstract: A driving circuit of a display to display full color by light emitting elements is provided which can attain sufficient display characteristics even when there is a difference in characteristics of the light emitting elements and can lower power consumption. The driving circuit is used for a stripe type display in which electrical characteristics of a red light emitting organic EL (Electroluninescence) element differ greatly from those of green and blue light emitting organic EL elements in which these three light emitting elements are arranged repeatedly in a column direction in a manner that the red light emitting element is sandwiched by the green and blue light emitting elements and the driving circuit is made up of driving sections each having driving capability enough to drive the red light emitting organic EL element and other driving sections each having driving capability enough to drive the green and blue light organic EL elements.

Abstract: An edge-light type backlight unit reduces the color unevenness on the display screen caused by the arrangement of point-shaped light sources (e.g., LEDs) in a point-shaped light source unit comprising a set of point-shaped light sources aligned. The backlight unit includes at least one point-shaped light source unit having point-shaped light sources arranged in a single direction in a predetermined order, the light sources emitting monochromatic light of different colors. The unit further comprises a first optical filter for limiting or controlling transmission of the monochromatic light emitted from one of the light sources disposed at one end of the light source unit, and a second optical filter for limiting or controlling transmission of the monochromatic light emitted from another of the light sources disposed at the other end thereof. The first and second filters are selectively formed on a first or second light guide plate or a diffusing plate.