Patent application number | Description | Published |
20090303410 | Display apparatus and back light unit to be used therefor - A back light unit includes a light source unit combined with an optical waveguide having translucency to guide a light of light source in a direction of liquid crystal panel, and a chassis for holding or supporting the light source unit. The optical waveguide is formed in plate-like shape, a face opposing to the back face of liquid crystal panel is used as a light emitting surface, a face opposing to the chassis is used as a reflecting face for reflecting a light, one of a plurality of side faces adjacent to light emitting surface and reflecting face is used as a light incidence surface where a light from the light source is injected. The light source unit is arranged in multiple in a horizontal direction or a vertical direction of the liquid crystal panel, in the back face side of the liquid crystal panel. | 12-10-2009 |
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 |
20100245711 | LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device having a direct-lighting backlight using LEDs as a light source, the number of LEDs is reduced without causing unevenness in brightness. An LED is disposed under a cylindrical lens to be closer to one end of the lens than a middle part of the lens. Light emitted from the LED is outputted, as diffused light, upward from an end diffusion surface of the lens. A portion of the top surface of the lens makes up a total reflection surface to reflect light emitted from the LED and thereby cause the reflected light to head for the other end of the lens. Diffusion surfaces formed on the top surface and the bottom surface of the lens radiate diffused light upward of the lens, causing uniform light to be radiated from the whole top surface of the lens. | 09-30-2010 |
20120069265 | DISPLAY APPARATUS AND BACK LIGHT UNIT TO BE USED THEREFOR - A back light unit includes a light source unit combined with an optical waveguide having translucency to guide a light of light source in a direction of liquid crystal panel, and a chassis for holding or supporting the light source unit. The optical waveguide is formed in plate-like shape, a face opposing to the back face of liquid crystal panel is used as a light emitting surface, a face opposing to the chassis is used as a reflecting face for reflecting a light, one of a plurality of side faces adjacent to light emitting surface and reflecting face is used as a light incidence surface where a light from the light source is injected. The light source unit is arranged in multiple in a horizontal direction or a vertical direction of the liquid crystal panel, in the back face side of the liquid crystal panel. | 03-22-2012 |
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 |
20120229727 | ILLUMINATION DEVICE AND IMAGE DISPLAY DEVICE EMPLOYING THE SAME - The object of the present invention is to achieve weight reduction of an illumination device and uniformization of luminance distribution. The illumination device (backlight unit) comprises a linear light source, a reflecting layer and an outlet layer. The reflecting layer and the outlet layer face each other via space. The linear light source is arranged at an end of the space. The outlet layer is formed as a semi-transmissive layer which transmits part of incident light while reflecting part of the incident light. The cross-sectional shape of the reflecting layer has an apex, which is concave in an illuminating direction, in a section from a position close to the linear light source to a central position of the reflecting layer and an inflection point in a section from the apex to a distal end of the reflecting layer. | 09-13-2012 |
Patent application number | Description | Published |
20090240900 | MEMORY APPARATUS AND MEMORY CONTROL METHOD - A memory includes a plurality of blocks that each include a plurality of memory cell arrays connected to divided bit lines, a first decoder that generates a block select signal for selecting any of the blocks based on an inputted address signal, read/write portions disposed for the respective blocks, each of the read/write portions executes read or write of the memory cell array belonging to the block of its own, and signal generation portions each generates an operation control signal for bringing the read/write portion that belongs to the selected block into an operating state when the block thereof has been selected by the block select signal. Each of the signal generation portions generates an operation control signal for bringing the read/write portion that belongs to the block thereof into a non-operating state when the block thereof is not selected by the block select signal. | 09-24-2009 |
20090296500 | MEMORY CIRCUIT AND CONTROL METHOD THEREOF - A memory circuit having a global signal driving circuit, which, when a first read signal is inputted from a first bit signal line with a column signal inputted from a column signal line, outputs the first read signal as a global signal from a global signal line, and, when a first driving write signal is inputted from the first bit signal line, inhibits the first driving write signal from being outputted to the global signal line on the basis of a first write signal inputted from a first write signal line. | 12-03-2009 |
20100235692 | MEMORY TEST CIRCUIT AND PROCESSOR - A memory test circuit for testing a memory including a first circuit for performing a logic operation of a test signal, which determines whether the memory is operated in a test mode or in an ordinary operation mode, and an expected value representing a value which is expected to be set to data read from the memory, and a second circuit for outputting an exclusive OR of an output signal from the first circuit and the data read from the memory. | 09-16-2010 |
20140247679 | SEMICONDUCTOR STORAGE DEVICE AND TESTING METHOD - A plurality of writing circuits respectively writes data to a plurality of memory cell arrays and a redundant cell array. A holding circuit, which is arranged for each memory cell array, holds data input as a storage target. A first selection circuit, which is arranged for each of the writing circuits of the memory cell arrays, selects data to be output to the writing circuits from among pieces of data input from the holding circuit of the memory cell array and holding circuits of other memory cell arrays. A switching circuit makes two or more first selection circuits select same data and to input the same data to three or more writing circuits so that the same data is written to two or more memory cell arrays and the redundant cell array when a prescribed signal becomes active. | 09-04-2014 |
Patent application number | Description | Published |
20080204667 | PROJECTION DISPLAY AND LIGHTING UNIT - A lighting unit that optimizes an oscillation frequency for oscillating a diffusion device and its amplitude amount and a projecting display using the lighting unit are provided. Driving of a light source driving unit is controlled on the basis of driving of the oscillation driving unit. | 08-28-2008 |
20080297463 | LIQUID CRYSTAL DISPLAY APPARATUS AND LUMINANCE CONTROL METHOD THEREOF - For the purpose of suppressing untrue black with the change in luminance of video, which is displayed as the same object, being reduced to improve the contrast, there is provided a liquid crystal display apparatus that is capable of: extracting the pixel frequency distribution of an input video signal on a luminance level basis, and extracting the pixel frequency distribution of specific color from a color-difference signal of input video in a screen area, the color-difference signal being determined from the luminance distribution of a plurality of backlights; on the basis of the result of the extraction, determining the control amount of the luminance of the plurality of backlights, and the correction amount of the luminance of a liquid crystal panel, on a screen area basis; controlling the luminance of the plurality of backlights on the basis of the control amount of the luminance; and at the same time, controlling the luminance of the input video signal on the basis of the correction amount of the luminance. | 12-04-2008 |
20080297683 | LIQUID CRYSTAL DISPLAY DEVICE - A direct type backlight unit used in a liquid crystal display device is provided which can suppress lowering of luminance at an electrode portion of a linear light source. A reflecting plate is formed on a side wall of a box-shaped reflector close to an end of a linear light source. The reflector reflects light beams from the linear light source to be guided toward a liquid crystal panel. The reflecting plate on the side wall has at least two inclined surfaces. The inclined surfaces may have a stepped shape or a convex ridge shape. According to this arrangement, it is possible to reduce or eliminate decrease of the luminance level at ends of an effective display area of a liquid crystal panel. | 12-04-2008 |
20080297692 | Image Display Apparatus and Backlight Unit to Be Used Therein - An image display apparatus includes a backlight unit including a plurality of light sources arranged in a flat, a reflecting portion for reflecting light from the light sources, a diffuser for diffusing the light from the light sources and the light reflected from the reflecting portion, and a chassis for maintaining or supporting the light sources, the reflecting portion and the diffuser; and a liquid crystal display unit which receives the light diffused by the diffuser of the backlight unit. Concave portions are formed in the chassis at positions corresponding to electrodes of the plurality of light sources, positions corresponding to light-emitting portions of the light sources are arranged in a flat, and a circuit for driving the liquid crystal display unit is provided on a rear surface of a planar portion of the chassis. Accordingly, it is possible to realize a thin lightweight backlight with high luminance and high luminance uniformity. | 12-04-2008 |
20090059125 | Image display apparatus - An image display apparatus includes: a plurality of light sources for emitting light; an optical uniformizing portion for uniformizing light emitted from the plurality of light sources; a total reflection portion disposed above the plurality of light sources, the total reflection portion totally reflecting light from the optical uniformizing portion; an optical guide portion for guiding light totally reflected at the total reflection portion; an optical diffusion unit for diffusing light from the total reflection portion and outputting the diffused light; an optical parallelizing unit for parallelizing light from the optical diffusion unit; and a liquid crystal panel for modulating light from the optical parallelizing unit into an optical image in accordance with an image signal and displaying the optical image. | 03-05-2009 |
20090059179 | IMAGE DISPLAYING APPARATUS, AND A METHOD FOR ADJUSTING VIBRATING CONDITION OF A REFLECTION MIRROR IN THE IMAGE DISPLAYING APPARATUS - For enabling to prevent ill effects from being generated in the structures of a reflection mirror, even if increasing an output energy from a light source, thereby preventing ill influences from being exerted on the driving condition thereof, a mirror drive controller unit | 03-05-2009 |
20110273629 | IMAGE DISPLAYING APPARATUS, AND A METHOD FOR ADJUSTING VIBRATING CONDITION OF A REFLECTION MIRROR IN THE IMAGE DISLAYING APPARATUS - For enabling to prevent ill effects from being generated in the structures of a reflection mirror, even if increasing an output energy from a light source, thereby preventing ill influences from being exerted on the driving condition thereof, a mirror drive controller unit | 11-10-2011 |
Patent application number | Description | Published |
20080271024 | Information processing apparatus, information processing system and information processing method for processing tasks in parallel - In a micro processor unit, when processing to be requested to another processor unit which connects via a network, occurs during task processing in a task processing unit in an application SPU, a communication controller in a PU specifies a network with which a processor unit, which is a request destination, connects. An interface selector in the application SPU selects one network included in the specified networks, with the view of communication capability or the like, and writes that information in a look-aside buffer. In case that processing for the same processing target is requested next time and after that, a system SPU or the PU transmits the processing request depending on required communication capability. | 10-30-2008 |
20090031315 | Scheduling Method and Scheduling Apparatus - Thread information is retained in a main memory. The thread information includes a bit string and last executed information. Each bit of the bit string is allocated to a thread, and the number and the value of the bit indicate the number of the thread and whether or not the thread is in an executable state, respectively. The last executed information is the number of a last executed thread. A processor rotates the bit string so that a bit indicating the last executed thread comes to the end of the bit string. It searches the rotated bit string for a bit corresponding to a thread in the executable state in succession from the top, and selects the number of the first obtained bit as the number of the next thread to be executed. Then, the thread information is updated by changing the value of the bit of this number to indicate not being executable, and setting the last executed information to the number of this bit. This operation is performed by using an atomic command. | 01-29-2009 |
20110302587 | INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD - A system-level management unit generates a system processing and makes a processing request to a task allocation unit of a user-level management unit. The task allocation unit schedules the system processing according to a procedure of an introduced user-level scheduling. A processing unit assigned to execute the system processing sends a notification of acceptability of the system processing to a main processing unit, by halts an application task in appropriate timing or when the processing of the current task is completed. When the notification is received within the time limit for execution, the system-level management unit has the processing unit start the system processing. | 12-08-2011 |