Abstract: A backlight device includes a plurality of light sources arranged in a shape of a matrix, a reflective sheet having partition walls arranged to surround each of the plurality of light sources in four directions and reflecting light emitted from the plurality of light sources, a luminance uniformity plate located above the reflective sheet and uniforming luminance of the light emitted from the plurality of light sources and light reflected by the reflective sheet, and a diffuser panel located above the luminance uniformity plate and diffusing light exiting from the luminance uniformity plate. A gap between the partition wall and the luminance uniformity plate is 5% to 30% of an optical distance defined by a distance between the reflective sheet and, the diffuser panel, and a gap between the luminance uniformity plate and the diffuser panel is not greater than 50% of the optical distance.

Abstract: A display device includes a display panel that displays an image, a plurality of light-emitting sources, a back plate to which the light-emitting sources are mounted, and a reflection sheet. The plurality of light-emitting sources radiates light toward the display panel from a back surface side of the display panel, and is arranged in a matrix along the display panel. The reflection sheet is attached to the back plate, provided with insertion holes into which the light-emitting sources are inserted, and reflects light radiated from the light-emitting sources. The back plate has a plurality of protrusions that causes portions of the reflection sheet to bulge out toward the display panel with the reflection sheet being attached to the back plate.

Abstract: A liquid crystal panel module of a liquid crystal display device includes a liquid crystal display panel on its front side and an EEFL backlight on its back side within a metal frame. A metal chassis is arranged at the center of the metal frame on the back surface of the liquid crystal panel module. A power supply circuit board and a video signal processing board are mounted on the metal chassis. An inverter board is arranged on the metal frame near one side of the metal frame on the back surface. The power supply circuit board includes a noise filter, an active filter and an isolation transformer. The inverter board includes a step-up transformer.

Abstract: A black insertion dimming PWM generation portion (32) outputs a black insertion PWM pulse VBL to drive a fluorescent lamp (43) in such a manner that a black insertion period during which the fluorescent lamp (43) is lit OFF and a light-ON period during which the fluorescent lamp (43) is lit ON are provided within one vertical period. A luminance dimming PWM generation portion (31) outputs a dimming PWM pulse Vpwm1 to PWM-drive the fluorescent lamp (43) so as to be lit ON and lit OFF repetitively during the light-ON period. An AND circuit (33) outputs an inverter driving signal Vout1 generated by superimposing the dimming PWM pulse Vpwm1 and the black insertion PWM pulse VBL. An inverter (42) drives the fluorescent lamp (43) by applying a voltage corresponding to the inverter driving signal Vout1 to the fluorescent lamp (43).

Abstract: A liquid crystal panel module of a liquid crystal display device includes a liquid crystal display panel on its front side and an EEFL backlight on its back side within a metal frame. A metal chassis is arranged at the center of the metal frame on the back surface of the liquid crystal panel module. A power supply circuit board and a video signal processing board are mounted on the metal chassis. An inverter board is arranged on the metal frame near one side of the metal frame on the back surface. The power supply circuit board includes a noise filter, an active filter and an isolation transformer. The inverter board includes a step-up transformer.

Abstract: A backlight device is configured from a drive unit and a backlight. The backlight includes a first light source group and a second light source group. The drive unit drives one or more fluorescent lamps of the first light source group in response to a first synchronous signal, and drives one or more fluorescent lamps of the second light source group in response to a second synchronous signal. A phase difference between the first synchronous signal and the second synchronous signal is within a range greater than 60 degrees and smaller than 120 degrees, or a range greater than 240 degrees and smaller than 300 degrees.

Abstract: A black insertion dimming PWM generation portion (32) outputs a black insertion PWM pulse VBL to drive a fluorescent lamp (43) in such a manner that a black insertion period during which the fluorescent lamp (43) is lit OFF and a light-ON period during which the fluorescent lamp (43) is lit ON are provided within one vertical period. A luminance dimming PWM generation portion (31) outputs a dimming PWM pulse Vpwm1 to PWM-drive the fluorescent lamp (43) so as to be lit ON and lit OFF repetitively during the light-ON period. An AND circuit (33) outputs an inverter driving signal Vout1 generated by superimposing the dimming PWM pulse Vpwm1 and the black insertion PWM pulse VBL. An inverter (42) drives the fluorescent lamp (43) by applying a voltage corresponding to the inverter driving signal Vout1 to the fluorescent lamp (43).

Abstract: An EPG extraction portion extracts EPG information; a program type decision portion decides the type of broadcast program using the extracted EPG information, and outputs a ratio modification signal to change the ratio of the image display interval to the black display interval according to the program type; a driving pulse generation portion generates a gate driver control signal which changes the write timing of a frequency-doubled image signal and frequency-doubled black display signal in one field interval, according to the ratio modification signal; and, a gate driver changes the write timing of the frequency-doubled image signal and frequency-doubled black display signal according to the gate driver control signal, to change the ratio of the image display interval to the black display interval.

Abstract: A backlight device is configured from a drive unit and a backlight. The backlight includes a first light source group and a second light source group. The drive unit drives one or more fluorescent lamps of the first light source group in response to a first synchronous signal, and drives one or more fluorescent lamps of the second light source group in response to a second synchronous signal. A phase difference between the first synchronous signal and the second synchronous signal is within a range greater than 60 degrees and smaller than 120 degrees, or a range greater than 240 degrees and smaller than 300 degrees.

Abstract: A doubler part doubles frequencies of video signals. A drive control circuit generates, in response to a synchronizing signal outputted from the doubler part, PWM dimming frequency information such that a PWM dimming frequency f and a black display ratio B satisfy the relationships f?25B+250 and B>10, and provides such information to a PWM dimming signal generation circuit. In addition, the drive control circuit drives a gate driver and a source driver such that one frame period is divided into an image display period and a black display period. The PWM dimming signal generation circuit generates, in response to a synchronizing signal and the PWM dimming frequency information, a PWM dimming signal and provides the PWM dimming signal to a lighting circuit. The lighting circuit activates a backlight device with dimming, in response to the PWM dimming signal.

Abstract: A liquid crystal display apparatus that uses a backlight for display includes a video signal time compression circuit for compressing a video signal in the time axis direction and outputting the time-compressed video signal, an LCD controller for driving a liquid crystal panel based on the time-compressed video signal, and a source driver and a gate driver. The liquid crystal display apparatus also includes a motion detection circuit for detecting the amount of motion of a display image based on the video signal, a PWM modulation pulse generation circuit for generating modulation pulses different in frequency according to the detection result from the motion detection circuit, and an inverter for lighting up the backlight based on the modulation pulses, to thereby enable reduction of image contour blurring in a moving image and reduction of flicker in a still image.

Abstract: A doubler part 10 doubles the frequencies of video signals. A drive control circuit 34 generates, in response to a synchronizing signal outputted from the doubler part 10, PWM dimming frequency information such that a PWM dimming frequency f and a black display ratio B satisfy the relationships and B>10, and provides such information to a PWM dimming signal generation circuit 17. In addition, the drive control circuit 34 drives a gate driver 12 and a source driver 13 in a manner such that one frame period is divided into an image display period and a black display period. The PWM dimming signal generation circuit 17 generates, in response to a synchronizing signal and the PWM dimming frequency information, a PWM dimming signal and provides the PWM dimming signal to a lighting circuit 16. The lighting circuit 16 activates a backlight device 15 with dimming, in response to the PWM dimming signal.

Abstract: An EPG extraction portion extracts EPG information; a program type decision portion decides the type of broadcast program using the extracted EPG information, and outputs a ratio modification signal to change the ratio of the image display interval to the black display interval according to the program type; a driving pulse generation portion generates a gate driver control signal which changes the write timing of a frequency-doubled image signal and frequency-doubled black display signal in one field interval, according to the ratio modification signal; and, a gate driver changes the write timing of the frequency-doubled image signal and frequency-doubled black display signal according to the gate driver control signal, to change the ratio of the image display interval to the black display interval.

Abstract: A bowl section of a wash-hand basin main body is provided with an overflow edge section of which part is extended upward to form an extension section. The extension section is provided with a cleaning fluid ejection port adapted to eject soapy water or the like for removing dirt and/or bacteria adhered to a user's hands. In this construction, the extension section continuously formed at a section of the overflow edge section of the bowl section functions as a conventional function case and as result, the number of parts and the number of execution man-hours can be reduced. Since a clearance or gap as seen in the prior art is not produced, cleaning efficiency can be improved. A cleaning fluid is filled in a tank, and a cleaning fluid refilling port for refilling the cleaning fluid from the tank is provided on the inner surface of a water receiving section. The cleaning fluid within the tank is supplied to the cleaning fluid ejection port by a pump.

Abstract: A liquid crystal display apparatus using a backlight (104) for display includes: a video signal time compression circuit (101) for compressing a video signal in the time axis direction and outputting the time-compressed video signal; an LCD controller (106) for driving a liquid crystal panel (105) based on the time-compressed video signal; a source driver (107) and a gate driver (108); a motion detection circuit (2) for detecting the amount of motion of a display image based on the video signal; a PWM modulation pulse generation circuit (4) for generating modulation pulses different in frequency according to the detection result from the motion detection circuit (2); and an inverter (103) for lighting up the backlight (104) based on the modulation pulses, to thereby enable reduction of image contour blurring in a moving image and reduction of flicker in a still image.