Abstract: A switching regulator includes a switching element, a rectifier element, an output capacitor having one electrode connected to an output terminal, a control circuit which supplies a pulse width modulation signal in accordance with a voltage of the output terminal to a control terminal of the switching element, a load determination circuit which outputs a determination signal in accordance with a load, based on a voltage of the control terminal of the switching element, and a variable inductance circuit including a plurality of coils and having an inductance value which is switchable based on the determination signal.

Abstract: A display device includes a display panel, a flexible printed circuit board having a connection to the display panel by using a film material, a control board having a connection to the flexible printed circuit board by using the film material, and a semiconductor integrated circuit fixed on the display panel by using the film material and functioning as a drive circuit of the display panel. The semiconductor integrated circuit includes an inspection terminal, and the display panel, the flexible printed circuit board, and the control board are provided with an inspection wiring line having one end connected to the inspection terminal and the other end to which a power supply voltage is applied on the control board.

Abstract: A switching regulator includes a switching element, a rectifier element, an output capacitor having one electrode connected to an output terminal, a control circuit which supplies a pulse width modulation signal in accordance with a voltage of the output terminal to a control terminal of the switching element, a load determination circuit which outputs a determination signal in accordance with a load, based on a voltage of the control terminal of the switching element, and a variable inductance circuit including a plurality of coils and having an inductance value which is switchable based on the determination signal.

Abstract: A liquid crystal display device according to the present invention includes a liquid crystal layer, a data signal line, a scan signal line, a transistor connected to the data signal line and the scan signal line, a pixel electrode connected to the data signal line via the transistor, a conductor and power supply wiring, the pixel electrode and the conductor forming a first capacitance and the conductor and the power supply wiring being connected to each other via a second capacitance. With this configuration, a residual image at the time of turning off of the power supply of the image display device is reduced.

Abstract: A liquid crystal display device includes: a plurality of source lines (2) to which a signal voltage according to a source signal is applied; a first wire (3a) and a second wire (3b) for fixing a wire breakage that are configured so that they can be connected to opposite ends of at least one of the plurality of source lines (2); and a buffer section (4) provided between the first wire (3a) and the second wire (3b) for impedance conversion along the first wire (3a) and the second wire (3b), wherein the liquid crystal display device includes spare capacitors (10a) and (10b) for adjusting a signal waveform according to the source signal applied to the source lines (2a) and (2b) with the first wire (3a) and the second wire (3b) being connected to the source lines (2a) and (2b).

Abstract: In a liquid crystal display device (10), it is determined whether or not a panel temperature (Tp) sensed by a temperature sensor (16) is higher than a predetermined temperature. As the result, when the panel temperature (Tp) is the predetermined temperature or less, an input video signal (V1) is output to a digital gamma conversion part (22). The digital gamma conversion part (22) performs gamma conversion using an LUT (12) on the video signal (V1). The LUT (12) to be used for the gamma conversion stores a result of gamma conversion of obtaining brightness by multiplying brightness corresponding to low gradation-side input gradations by a predetermined magnification. This gamma conversion is allowed to enhance the brightness corresponding to the low gradation-side input gradations of the video signal (V1), and therefore is allowed to improve a response speed of a liquid crystal.

Abstract: The present invention relates to liquid crystal display devices employing the interlaced mode. A normally black mode is employed as a light control method. A source driver subjects analog voltage signals (da, db) to polarity inversion every two horizontal scanning periods, the analog voltage signals being applied to source bus lines as driving video signals (Sa, Sb). A gate driver sequentially drives gate bus lines each being selected for one horizontal scanning. In an output portion (black signal insertion circuit) of the source driver, a blacking voltage is written by short-circuiting adjacent source bus lines after a lapse of one horizontal scanning period since the polarity inversion of the analog voltage signals (da, db) until the next polarity inversion of the analog voltage signals (da, db).

Abstract: In one embodiment of the present invention, a chromaticity converting device is realized which can appropriately correct a shift in hue caused by a leakage of green light from a blue color filter when a color filter having improved transmittance is used to increase luminance. The chromaticity converting device serves to perform chromaticity conversion with respect to an RGB signal, converts a gradation of G data so that the gradation of the G data decreases in a predetermined region A1 around B within a range of chromaticities expressible by the RGB signal, and converts the gradation of G data so that the gradation of G data increases in a predetermined region A2 around Y, which is a complementary color of B, within the range of chromaticities.

Abstract: In one embodiment of the present invention, a liquid crystal panel driving device for AC-driving a liquid crystal panel with first and second polarities includes an output tone generating section for generating an output tone corresponding to an input tone. With respect to the same input tone, the output tone generating section generates a first output tone when driving the liquid crystal panel with a first polarity, and generates a second output tone when driving the liquid crystal panel with a second polarity. The first and second output tones are determined based on a characteristic of the input tone and the center of amplitude of a voltage to be outputted in response to the input tone in AC driving. This allows providing a liquid crystal panel driving device capable of easily performing ? correction with respect to each liquid crystal panel.

Abstract: A liquid crystal display device includes: a plurality of source lines (2) to which a signal voltage according to a source signal is applied; a first wire (3a) and a second wire (3b) for fixing a wire breakage that are configured so that they can be connected to opposite ends of at least one of the plurality of source lines (2); and a buffer section (4) provided between the first wire (3a) and the second wire (3b) for impedance conversion along the first wire (3a) and the second wire (3b), wherein the liquid crystal display device includes spare capacitors (10a) and (10b) for adjusting a signal waveform according to the source signal applied to the source lines (2a) and (2b) with the first wire (3a) and the second wire (3b) being connected to the source lines (2a) and (2b).

Abstract: A hard board containing a fiber web and a thermoplastic resin which composite is used as a noise absorption product is improved in that the surface and spaces between the fiber web are covered and filled with the resin, and wherein a plurality of finely formed crevices is formed in the resin covering the surface of the composite.