Patent application number | Description | Published |
20100182541 | Backlight Unit and a Liquid Crystal Display Apparatus Applying the Same Therein - A backlight unit, being thin-sized, but having high definition and high uniformity of luminance, and a video display apparatus applying the same therein, has a plural number of sets of at least one or more of light source(s) ( | 07-22-2010 |
20100214508 | Backlight Unit and Liquid Crystal Display Device Using the Same - A backlight unit having a LED light source includes a light guide plate partitioned in areas each having a tapered shape formed of a thick portion and a thin portion. The light guide plate is formed such that a thick portion and a thin portion are repeated at certain intervals, and the repeated thick portions and the repeated thin portions gradually decrease in thickness. The LED light source is attached to a lateral side of each thick portion. Grooves are formed in the light irradiation direction of the LED light source and in a direction perpendicularly intersecting the light irradiation direction. Each of the grooves is formed in an concave shape (V-shape or trapezoid-shape). There is a relation 0.2/30<=W/D<0.1 where D denotes the distance between the light guide plate and a light diffusion plate, and W denotes the width of each of the grooves. An inclination angle θ relative to the center of each of the grooves is between 9 and 15 degrees inclusive. | 08-26-2010 |
20100220246 | BACKLIGHT DEVICE AND VIDEO DISPLAY APPARATUS USING THE SAME - In a backlight device manufactured by simultaneously arranging a plurality of backlight blocks in a combination manner, while each of the backlight blocks is comprised of: a light emitting source containing an LED, or a fluorescent lamp; a light conducting plate for conducting light emitted from the light emitting source to the side of a liquid crystal panel; and a reflection seat arranged on a rear plane of the light conducting plate; a dark luminance portion and a middle dark/bright luminance portion corresponding to dark/bright difference patterns for producing a dark/bright difference in luminance emitted from the backlight blocks are formed; and luminance of a bright luminance portion corresponding to a bright pattern of luminance emitted from a boundary between the backlight blocks is caused not to become visually conspicuous by a luminance fluctuation of the dark/bright difference pattern emitted from the backlight blocks. | 09-02-2010 |
20110001427 | PLASMA DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME, AND DISCHARGE STABILIZER POWDER - A technique for achieving both discharge voltage reduction and discharge stabilization in a PDP and the like is provided. This PDP manufacturing method includes, for a structure of a front plate structure ( | 01-06-2011 |
20110018786 | PLASMA DISPLAY PANEL AND PLASMA DISPLAY DEVICE - There is provided a technique for discharge stabilization of a plasma display panel by forming magnesium oxide with a large diameter and adjusting residual amounts of impurities contained in the magnesium oxide. That is, discharge stabilization material particle, which is coated on a protective-film layer of protecting electrodes and supplies sufficient amount of priming particles into a discharge gap, is focused. By setting each impurity concentration in the magnesium oxide used as the discharge stabilization material particle to 20 ppm or lower, discharge time lag is suppressed. | 01-27-2011 |
20110080532 | BACKLIGHT UNIT AND VIDEO DISPLAY APPARATUS APPLYING THE SAME THEREIN - A backlight unit of thin-type comprises: at least one or more light source(s); plural numbers of light guide plates, each of which is configured to guide and irradiate the light of the light source(s) to a side of a liquid crystal panel; and a chassis, on which the light source(s) and the light guide plates are fixed, thereby being constructed by aligning the light guide plates, wherein the following conditions are satisfied: | 04-07-2011 |
20110249220 | IMAGE DISPLAY APPARATUS AND BACKLIGHT APPARATUS USED THEREFOR - A plurality of backlight blocks are aligned, each block includes light sources and a unit light guide plate for guiding light from the light sources to the side of a liquid crystal panel, unit diffusion patterns are formed in a zigzag alignment on the unit light guide plate and another diffusion pattern is formed on the back of the unit light guide plate. One side of the unit light guide plate is defined as a light entrance surface and LEDs as the light sources are aligned along the light entrance surface to satisfy p≧a≧c where a indicates the size of the unit diffusion pattern in a direction orthogonal to an exit optical axis of the LEDs, c indicates the size of an LED emission surface in the direction of alignment of the LEDs, and p indicates the pitch of alignment of the light sources. | 10-13-2011 |
20110316766 | LIQUID CRYSTAL DISPLAY DEVICE, BACKLIGHT AND LED - A cross section of each divided light guiding plate is formed in a wedge shape, a step is formed at a portion of each divided light guiding plate where LEDs are arranged, and holes used for accommodating the LEDs are formed at the step. A plated face is formed on a lower face of each LED, and is coupled to a wiring substrate through solder. Each LED includes a light-emitting face, a lower frame, and an upper frame. The height of the lower frame of each LED is larger than the height of the upper frame, so that a lower end of the light-emitting face of each LED can be always located higher than a lower end of the divided light guiding plate. | 12-29-2011 |
20120113359 | Backlight Unit and a Liquid Crystal Display Apparatus Applying the Same Therein - A backlight unit and a video display apparatus having a plural number of sets of one or more of light sources. A light guidance plate for guiding lights from the light sources to a side of a liquid crystal panel, to be emitted. The light sources are disposed on one end side of the light guidance plate. Assuming that width of the gap or groove is “d”, distance between a light incident surface of the liquid crystal panel and a light emission surface of the light guidance plate, or distance between a light incident surface of an optical member disposed between the liquid crystal panel and the light guidance plate and a light emission surface of the light guidance plate is “h”, and further 2.0 mm>d≧0.1 mm and 10.0 mm>h≧0.4 mm, then the following condition is satisfied: 4≦h/d≦100. | 05-10-2012 |
20120140448 | BACKLIGHT DEVICE AND IMAGE DISPLAY USING THE SAME - A backlight device includes light emitting diodes (LED's) and a plate-like light guide plate which guides light from the light emitting diodes to a liquid crystal panel. Grooves are disposed on the back of the light guide plate and the light emitting diodes are disposed in the grooves. The light emitting diodes disposed in the grooves are arranged so that light emission direction thereof is parallel with light emission plane of the light guide plate. First optical pattern is disposed on first side opposite to light emission plane of light emitting diodes and second optical pattern is disposed on second side opposite to the back of light emitting diodes. The optical patterns are formed into minute prism array or lens array, for example. | 06-07-2012 |
20120147294 | Backlight Unit and Liquid Crystal Display Device Using the Same - “A backlight unit having a LED light source which includes a light guide plate partitioned in areas having a tapered shape formed of a thick and thin portion. The light guide plate forms a thick and thin portion repeated at certain intervals, and the repeated thick portions and the repeated thin portions gradually decrease in thickness. The LED light source is attached to a lateral side of thick portions. Grooves are formed in the light irradiation direction of the LED light source and in a direction perpendicularly intersecting the light irradiation direction. Each of the grooves is formed in an concave shape. There is a relation 0.2/30<=W/D<0.1 where D denotes the distance between the light guide plate and a light diffusion plate, and W denotes the width of each of the grooves. An inclination angle 0 relative to the center of each of the grooves is between 9 and 15 degrees inclusive. | 06-14-2012 |
Patent application number | Description | Published |
20090049503 | NEAR VIDEO-ON-DEMAND SIGNAL RECEIVER - A video signal receiver receives a plurality of video channels simultaneously carrying, offset by a transmission interval, a single video program, selects one channel from which to obtain the program for display to a user, and achieves a pause function in the display of the transmitted video program by temporarily storing a segment of the video program equal to the length of the transmission interval and obtaining the remainder of the program at a later time from the same or another channel. | 02-19-2009 |
20100265932 | Wireless transmitter, wireless transmission method, wireless receiver and wireless reception method - A wireless transmitter which includes: a packetizer which generates a special packet with a payload containing transmitted video signals and a header containing distinguishing information used to distinguish the special packet from an IP packet; and a wireless transmitting section for generating and transmitting wireless radio signals which contain a special packet generated by the packetizer. | 10-21-2010 |
20120027377 | PLAYBACK APPARATUS AND PROGRAM CONTENT TRANSMITTING AND RECEIVING SYSTEM - Program content is easily selected on a playback apparatus having a plurality of program content recording locations. | 02-02-2012 |
20120069158 | IMAGE DATA TRANSMISSION APPARATUS, IMAGE DATA TRANSMISSION METHOD, AND IMAGE DATA RECEIVING APPARATUS - [Object] To prevent image quality deterioration due to unnecessary format conversion. | 03-22-2012 |
Patent application number | Description | Published |
20090040211 | Method for driving plasma display panel - A method for driving an AC type plasma display panel includes the steps of performing initialization at least once for each frame so as to clear binary setting of wall charge quantity in a screen by discharge except for micro discharge in which electrodes covered with a plurality of fluorescent materials become cathodes, and performing special initialization at frequency of once for M frames, where M=two or more, so as to erase unnecessary wall charge in the screen by discharge in which electrodes become cathodes and that is stronger than the discharge in the initialization. | 02-12-2009 |
20090046086 | Method for driving plasma display panel - A method for driving an AC type plasma display panel includes the steps of performing initialization at least once for each frame so as to clear binary setting of wall charge quantity in a screen by discharge except for micro discharge in which electrodes covered with a plurality of fluorescent materials become cathodes, and performing special initialization at frequency of once for M frames, where M=two or more, so as to erase unnecessary wall charge in the screen by discharge in which electrodes become cathodes and that is stronger than the discharge in the initialization. | 02-19-2009 |
20090096374 | Plasma Display Panel - A plasma display panel, having a discharge space between a first and a second substrates, includes a plurality of scan electrodes, each disposed along a display line, which can be driven individually and a plurality of address electrodes disposed to intersect with the above scan electrodes, and pixel areas at the intersecting positions of the scan electrodes and the address electrodes Further, the plasma display panel includes a sustain electrode for producing sustain discharge with the scan electrodes, and the sustain electrode is formed to have a grid shape. Each pixel area is surrounded with the grid shape. | 04-16-2009 |
20100141560 | Plasma Display Panel - A plasma display device performing display control by utilizing plasma discharge includes a panel having a plurality of address electrodes and a plurality of display electrodes disposed to intersect with the address electrodes, and a drive circuit performing address discharge drive for selectively producing a discharge in cells between the address electrodes and the display electrodes, and display discharge drive for applying to the display electrode a display drive pulse having a voltage increasing with such a gradient as to continuously produce a discharge current in the selected cell. In the display discharge drive performed after the address discharge drive, a display drive pulse with an increasing voltage of gentle gradient is applied to the display electrode, thereby producing faint discharges continuously in the selected cell during the increase of the voltage applied to the display electrode. Display luminance is controlled by the above ramp-wave discharge. In such the ramp-wave discharge, differently from the conventional strong discharge, faint discharges are produced a plurality of times while the display drive pulse is being applied, enabling improvement on the discharge efficiency, and reduction of power consumption. | 06-10-2010 |
20120239657 | CATEGORY CLASSIFICATION PROCESSING DEVICE AND METHOD - A category classification processing device includes a search unit that stores, as a search keyword log assembly, Q&A examples, which are actually referred to by a client, together with keywords; and a category extracting unit that obtains keyword storage frequencies expressing a number of times each of the keywords, which are recorded together with the Q&A examples in the search keyword logs, is stored for each of the Q&A examples, extracts, as category candidates of each of the Q&A examples, an m number of top keywords (m being a positive integer) in a descending order of the keyword storage frequency, uses the extracted category candidates as categories, and associates the categories with the Q&A examples. | 09-20-2012 |
Patent application number | Description | Published |
20120140149 | LIQUID CRYSTAL DISPLAY APPARATUS - A liquid crystal display apparatus equipped with a backlight unit includes an LED, a light guide plate for light emission by guiding light from the LED to a liquid crystal panel, an LED board for driving the LED, a reflection sheet interposed between the light guide plate and the LED board, and a chassis on which the LED, the light guide plate, the reflection sheet and the LED board are mounted. The light guide plate has a half length and a half width of the liquid crystal panel, and the reflection sheet has substantially the same size as the light guide plate. The reflection sheet is extended at portions abutting on sides of the chassis to define flanges. | 06-07-2012 |
20120147277 | BACK LIGHT UNIT AND DISPLAY APPARATUS USING THE SAME - To provide a back light unit that reduces an uneven brightness and has a spatially uniform brightness distribution. According to an aspect of the present invention, the back light unit comprises an LED and a light guide plate for guiding light from the LED to a liquid crystal panel side, wherein a recess is provided on the back surface side of the light guide plate, wherein a plurality of LEDs are housed in the recess, and wherein a light amount limiting member is provided at a position facing the recess on s light exit surface side of the light guide plate. The light amount limiting member is configured, for example, by applying an ink with a predetermined optical property to a transparent sheet. | 06-14-2012 |