Patent application number | Description | Published |
20080218664 | FLUORESCENT LAMP AND IMAGING DEVICE USIGN THE SAME - In conventional fluorescent lamps and imaging devices using the same, there have been challenges that lighting efficiency should be enhanced and variation in emission colors should be reduced. The present invention has solved these challenges by providing a novel fluorescent lamp. The phosphor layers of the fluorescent lamp is composed of at least two types of phosphors, in which at least the most outer surface is a phosphor layer made of one of the phosphors (the first phosphor); and the rest portion of the phosphor layers, is made of mixed phosphors including a plurality of phosphors having respective emitting colors. | 09-11-2008 |
20090115332 | IMAGE DISPLAY DEVICE - A problem of the present invention is to reduce discharge delay and discharge voltage in an image display device such as a PDP using ultraviolet rays emission generated by the discharge, thereby improving image quality and reducing cost. In order to solve the above problem, according to the present invention, the image display device using the ultraviolet rays emission generated by discharge includes, within a discharge space, a phosphor where a 1/10 afterglow time is 1 ms or more and a light emitting wavelength is in a range of 200 to 460 nm in which light emitting intensity is at the maximum. Under the same condition, the effect of the invention can be improved by making the 1/10 afterglow time 8 ms or more. Further, the effect of the present invention is further effective by making the 1/10 afterglow time 100 ms or more. | 05-07-2009 |
20090230836 | DISPLAY DEVICE AND PLASMA DISPLAY PANEL - Provided is a display device such as a plasma display device including a front plate and a rear plate arranged opposing to each other to form a discharge space, where a discharge gas filled inside the discharge space, and at least a pair of electrodes for performing a display discharge and a phosphor layer for emitting visible light by an ultraviolet ray emission by the discharge of the discharge gas are provided. Inside the discharge space, a material whose main composition is alumina oxychloride of a group IIa metal and/or a group IIb metal is at least partly contained. Accordingly, a sustain discharge voltage can be reduced. | 09-17-2009 |
20100096975 | PLASMA DISPLAY PANEL - In order to reduce the discharge delay time and increase the image quality in a display device such as a PDP using ultraviolet light emission produced by discharge, there is provided a display device including: a front panel and a rear panel disposed opposite to each other with discharge spaces formed therebetween, and a discharge gas being injected into the discharge spaces; at least a pair of electrodes for performing a display discharge; and phosphor layers emitting visible light by using ultraviolet light emission produced by discharge of the discharge gas. At least one of the compounds represented by the composition formulas Cs | 04-22-2010 |
20110063819 | BACKLIGHT AND LIQUID CRYSTAL DISPLAY DEVICE - There are provided a backlight capable of improving luminance efficiency (brightness efficiency) by devising a structure of a HCFL to allow adjustment of a cold spot temperature, and further provided a liquid crystal display device using the backlight. A distance (cathode length) between one tube end portion and one filament of a pair of filaments is set longer than a distance (cathode length) between the other tube end portion and the other filament. In this manner, at least the tube end portion on the longer cathode length side can be set as the cold spot. Further, a tube end portion of a hot cathode fluorescent tube is arranged outside a lamp house. In this manner, the cold spot set at the tube end portion of the hot cathode fluorescent tube can be arranged outside the lamp house where the temperature is low, and the cold spot temperature can be decreased. | 03-17-2011 |
20120200613 | FLUORESCENT LAMP AND IMAGE DISPLAY APPARATUS - To obtain effective luminance and light efficiency while avoiding discharge, it is necessary to sufficiently increase a current luminous efficiency of gas and an electron emission efficiency of an electron source. In a fluorescent lamp, an anode electric field is increased by setting a pressure of a noble gas or a molecular gas enclosed to 10 kPa or higher, setting an anode voltage to 240 V or lower, and setting a substrate distance to 0.4 mm or smaller. Furthermore, the resulting effect that the current luminous efficiency is increased in proportion to the electric field is used. Also, by applying a MIM electron source having an electron emission efficiency exceeding 10% as an electron source, a non-discharge fluorescent lamp having a light emission luminance equal to or larger than 10 | 08-09-2012 |
20130340808 | WAVELENGTH CONVERSION TYPE SEALING MATERIAL SHEET AND SOLAR BATTERY MODULE - In order to enhance the power generation efficiency of a solar battery, the solar battery is formed to have a configuration in which a sealing material sheet formed of a sealing material having a wavelength conversion material mixed therein and having a thickness (c) is disposed between a front glass having an antireflection film and a solar battery cell; the wavelength conversion material is a needle fluorescent substance capable of converting short-wavelength light to long-wavelength light; and when a long diameter and a short diameter of the needle fluorescent substance are defined as “a” and “b”, respectively, there are relations of “a>b” and “a>c”. According to this, more outgoing light from the fluorescent substance can be directed toward the side of the solar battery cell, so that the power generation efficiency can be enhanced. | 12-26-2013 |