Patent application number | Description | Published |
20100013872 | LIQUID CRYSTAL DISPLAY DEVICE - One embodiment of the present invention discloses a liquid crystal display device, and more particularly a transmissive-type liquid crystal display device including a backlight on a back of a panel. The liquid crystal display device includes a gray scale signal generating portion including an input image luminance level analyzing circuit that obtains luminance level distributions of respective colors based on RGB image signals, a correction coefficient calculating circuit that calculates correction coefficients based on the luminance level distributions of the respective colors, and an image signal correcting circuit that corrects luminance levels indicated by the RGB image signals, based on the correction coefficients; and an amount-of-backlight-light control circuit that adjusts amounts of lights emitted from LEDs for the respective colors based on the correction coefficients. In the correction coefficient calculating circuit, correction coefficients are calculated such that a difference in luminance level distribution between the RGB colors is reduced by corrections to luminance levels. In the amount-of-backlight-light control circuit, the amounts of lights emitted for the respective colors are adjusted such that changes in luminance levels and changes in the amounts of lights emitted are mutually cancelled out. | 01-21-2010 |
20100060818 | ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight (illumination device; | 03-11-2010 |
20100073598 | LIQUID CRYSTAL DISPLAY DEVICE, TELEVISION RECEIVER, AND LIGHTING DEVICE - In an embodiment of the present invention, in a liquid crystal display device which controls a light luminance of each of lighting regions, each of lighting regions of a backlight has a smaller width in a horizontal direction than in a vertical direction. This makes it possible to cause a reduction in contrast due to spatial distribution of light luminances, which spatial distribution is generated due to cross talk between lighting regions, to be less perceivable to an observer positioned in an oblique viewing direction. | 03-25-2010 |
20100103343 | ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight ( | 04-29-2010 |
20100103346 | LIGHT EMITTING ELEMENT AND LIQUID CRYSTAL DISPLAY APPARATUS - A light-emitting element ( | 04-29-2010 |
20100110339 | LIGHT EMITTING ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE - A light emitting element ( | 05-06-2010 |
20100118562 | LIGHT-EMITTING ELEMENT AND DISPLAY UNIT HAVING THE SAME - A first light guide plate of a light-emitting element is formed by a plurality of strip-shaped light guide bodies arranged in parallel with each other, where each strip-shaped light guide body has a light incident surface on which light from a light source is incident, and a light-emitting surface from which light from the light incident surface is emitted, and on which a plurality of prisms are formed. A second light guide plate of the light-emitting element is positioned so as to face the light-emitting surface side of the first light guide plate, has prisms formed on a surface of the first light guide plate side in a shape that meshes with a shape of the prisms of the first light guide plate, and is formed by a fewer number of light guide bodies arranged in parallel than the strip-shaped light guide bodies. | 05-13-2010 |
20100134718 | ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight (illuminating device) of the present invention is a tandem type backlight including a plurality of light-emitting units ( | 06-03-2010 |
20100214281 | ILLUMINATION DEVICE, DISPLAY DEVICE, AND LIGHT GUIDE PLATE - An illumination device ( | 08-26-2010 |
20100214802 | ILLUMINATION DEVICE AND DISPLAY DEVICE - An illumination device includes a plurality of light source units ( | 08-26-2010 |
20100238375 | LIGHT GUIDE UNIT, ILLUMINATING DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - In a light guide unit ( | 09-23-2010 |
20100259470 | LIGHT-EMITTING ELEMENT, ILLUMINATION DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A light-emitting element ( | 10-14-2010 |
20100265432 | ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE - A backlight (illumination device) | 10-21-2010 |
20110181793 | LIGHT EMITTING DEVICE FOR IMAGE DISPLAY, DISPLAY DEVICE AND TELEVISION RECEIVER - A light emitting device for image display includes an LED current setting circuit and an LED voltage setting circuit. In at least one embodiment, the LED current setting circuit generates a current control signal to vary an element current flowing in the LED element depending on an image display mode. The LED voltage setting circuit generates a voltage control signal to vary driving voltage driving the LED element depending on the image display mode. The light emitting device further includes a voltage generation circuit that generates the driving voltage according to the voltage control signal and the driving voltage to the LED element. | 07-28-2011 |
20120039078 | LIGHTING DEVICE AND DISPLAYING DEVICE - A triangle prism (PR | 02-16-2012 |
20120098462 | LED Driver Circuit, Light Source Device, And LCD Device - An LED driver circuit which provides a cost reduction is provided by employing a circuit configuration which allows a size reduction. In at least one example embodiment, the LED driver circuit includes a first switching element, a second switching element, a sense resistor, a sensing unit, a calculator, and a driver. The plurality of LEDs, the first switching element, the second switching element, and the sense resistor are coupled to each other in series in this order. The sensing unit receives a voltage at a node between the second switching element and the sense resistor, and generates voltage data representing the voltage. The calculator calculates a temporal average of a current flowing through the LEDs based on the voltage data, and generates current data corresponding to the temporal average. The driver drives the first switching element and the second switching element based on the current data. | 04-26-2012 |
20120120656 | LIGHTING DEVICE AND DISPLAY DEVICE - An illumination device ( | 05-17-2012 |