Patent application number | Description | Published |
20090174307 | FLUORESCENT MIXTURE FOR FLUORESCENT LAMP, FLUORESCENT LAMP, BACKLIGHT ASSEMBLY HAVING THE SAME AND DISPLAY DEVICE HAVING THE SAME - A fluorescent lamp includes a lamp body, a fluorescent layer and a discharge electrode. The lamp body has a discharge space in which ultraviolet light is generated. The fluorescent layer is formed on an inner surface of the lamp body to change the ultraviolet light into visible light. The discharge electrode is on an end portion of the lamp body to apply a voltage to the discharge space. A ratio of intensities of the visible light at wavelengths of about 545 nm and about 516 nm is about 1.32:1 to about 1.71:1. Therefore, color reproducibility and luminance may be improved. | 07-09-2009 |
20090256480 | LAMP AND LIQUID CRYSTAL DISPLAY HAVING THE SAME - A lamp and a liquid crystal display including the lamp, the lamp including a lamp tube into which a discharge gas is injected, an internal electrode portion disposed at each of a first end and a second end at an inner side of the lamp tube, an electrode lead connected to each of the internal electrode portions and extending to an exterior side of the lamp tube, and a transparent cap disposed on outer surface of each of the first end and the second end of the lamp tube. | 10-15-2009 |
20090284181 | BACKLIGHT UNIT ASSEMBLY, DISPLAY DEVICE HAVING THE SAME, AND METHOD OF DIMMING THE DISPLAY DEVICE - A backlight unit assembly includes a surface light source with a plurality of first electrode lines extending in a first direction, a plurality of second electrode lines and a plurality of discharge blocks defined in regions where the first and second electrode lines cross each other, respectively; a memory stores discharge/non-discharge data; a luminance calculator calculates luminances of a selected region based on an image signal; and a dimming controller outputs dimming control signals corresponding to the calculated luminances by using the discharge/non-discharge data stored in the memory. A first driving signal is transmitted to one of the first electrode lines, a second driving signal having a different waveform from the first driving signal is transmitted to another of the first electrode lines adjacent the above first electrode line, and a driving voltage is applied to one of the second electrodes lines that crosses the above two first electrode lines. | 11-19-2009 |
20090311486 | OPTICAL SHEETS - Disclosed is an optical sheet having an optical structure, such as a prism film or sheet, which is a constituent of a backlight unit. In the optical sheet, protrusions are formed on the optical structure layer, and thus light-collecting efficiency in a front direction is maintained, and a function of diffusing light to the front or the inclined surface is also exhibited, thus eliminating the need to additionally mount a diffusion film or a protection film, thereby obviating the use of a plurality of optical films, consequently making it possible to economically manufacture a backlight unit with improved productivity. | 12-17-2009 |
20100039368 | METHOD OF LOCAL DIMMING OF DISPLAY LIGHT SOURCE AND APPARATUS PERFORMING SAME - In a machine-implemented method of local dimming a light source of a light source block for driving the light source block to provide a plurality of image regions with light, duty ratios of a first light source and a second light source adjacent to the first light source are initially determined by using a first target luminance value of a first image region closest to the first light source and a second target luminance value of a second image region closest to the second light source. The initially determined duty ratios are compensated by using a target luminance value of a remaining image region excluding the first and second image regions among the image regions receiving the light generated from the first and second first light sources. The first and second first light sources are driven by using the compensated duty ratios. | 02-18-2010 |
20100053938 | BACKLIGHT ASSEMBLY AND A DISPLAY DEVICE HAVING THE SAME - A backlight assembly comprising: a plurality of fluorescent lamps each including a lamp tube having a fluorescent layer, a discharge gas contained in the lamp tube, a first electrode disposed in the lamp tube, and a conductive terminal capacitively coupled to the first electrode; and a lamp socket which secures the plurality of fluorescent lamps. | 03-04-2010 |
20100085735 | OPTICAL SHEETS - Disclosed is an optical sheet for use in liquid crystal displays, which simultaneously functions to uniformly diffuse light emitted from a light guide plate and a diffusion plate and to increase brightness, decreases the loss of light, and enables the fabrication of thinner liquid crystal displays. | 04-08-2010 |
20100117947 | Light Source Module and Display Apparatus Having the Same - A light source module includes first and second light sources. The first light source includes a blue light-emitting body emitting blue light and a red fluorescent material disposed around the blue light-emitting body emitting red light by virtue of being excited by the blue light. The second light source is disposed adjacent to the first light source, and includes a green light-emitting body emitting green light. The blue and green light-emitting materials may include a light-emitting diode (LED) chip including substantially the same material. Accordingly, since a variation of light efficiency of the light source module with respect to temperature is small, a color feedback system may be omitted, and color reproducibility may be high. | 05-13-2010 |
20130026948 | LIGHT SOURCE MODULE AND DISPLAY APPARATUS HAVING THE SAME - A light source module includes first and second light sources. The first light source includes a blue light-emitting body emitting blue light and a red fluorescent material disposed around the blue light-emitting body emitting red light by virtue of being excited by the blue light. The second light source is disposed adjacent to the first light source, and includes a green light-emitting body emitting green light. The blue and green light-emitting materials may include a light-emitting diode (LED) chip including substantially the same material. Accordingly, since a variation of light efficiency of the light source module with respect to temperature is small, a color feedback system may be omitted, and color reproducibility may be high. | 01-31-2013 |
20130274924 | METHOD, MEDIUM AND APPARATUS CLASSIFYING AND COLLECTING AREA FEATURE INFORMATION ACCORDING TO A ROBOT'S MOVING PATH, AND A ROBOT CONTROLLED BY THE AREA FEATURES - A method of classifying and collecting feature information of an area according to a robot's moving path, a robot controlled by area features, and a method and apparatus for composing a user interface using the area features are disclosed. The robot includes a plurality of sensor modules to collect feature information of a predetermined area along a moving path of the robot, and an analyzer to analyze the collected feature information of the predetermined area according to a predetermined reference range and to classify the collected feature information into a plurality of groups. | 10-17-2013 |