Abstract: A projection display apparatus is provided with a liquid crystal panel, and first to third polarizing layers are arranged on an optical path of light. The transmission axis of the first polarizing layer and the transmission axis of the second polarizing layer orthogonally intersect with each other. The transmission axis of the second polarizing layer and the transmission axis of the third polarizing layer are parallel to each other. The first compensation layer compensates a phase difference generated due to pre-tilt angle on the entering side of the liquid crystal panel. The second compensation layer compensates a phase difference generated due to a pre-tilt angle on the outgoing side of the liquid crystal panel. The third compensation layer compensates a phase difference generated due to deviation between the polarization axis of the light entering the third polarizing layer and the transmission axis of the third polarizing layer.

Abstract: A display device includes: an image processing unit receiving an input of magnification ratio information indicating a magnification ratio of an image, and an image signal indicating the image, the image processing unit performing on the image signal, image processing which changes an image size of the image signal according to the magnification ratio; an image quality processing receiving an input of an image signal undergone the image processing, and the magnification ratio information, the image quality processing unit changing a sharpness frequency characteristic preliminarily determined according to the image, according to the magnification ratio, the image quality processing unit performing sharpness processing which emphasizes a frequency component of the image signal undergone the image processing, based on the changed sharpness frequency characteristic; and a display unit displaying on a display screen, an image based on the image signal sharpness-processed by the image quality processing unit.

Abstract: The present invention seeks to realize a small etendu illumination optical system, a longer operating life and a higher brightness. The illumination optical system comprises: a laser light source that generates an excitation light; a fluorescent substance that generates a fluorescent light in response to the excitation light, a light tunnel that outputs the excitation light input at one end thereof to the fluorescent substance from the other end thereof, and that outputs the fluorescent light generated by the fluorescent substance from the one end thereof; and a mirror that is placed within a light path between the laser light source and the light tunnel, and that reflects the fluorescent light, the mirror having an aperture formed thereon that allows the excitation light to pass through.

Abstract: A display device includes: a display screen displaying screen images; a required-brightness computation unit computing required brightnesses for each of the screen images; a brightness determination unit comparing the required brightnesses computed for each of the screen images, and determining the screen image corresponding to the required brightness having highest brightness to be a maximum-required-brightness image; and a brightness control unit performing light-source brightness control and performing image gradation control, the light-source brightness control controlling the brightness of the light source so as to make the brightness of the light source the set brightness for the maximum-required-brightness image, the image gradation control controlling a gradation of the image displayed on the liquid-crystal panel in accordance with the brightness of the light source, so as to make a brightness of each of the screen images other than the maximum-required-brightness image the set brightness specified fo

Abstract: Disclosed is an illumination optical system that includes: two solid-state light sources (11 and 12); first light guide (21) configured to guide light emitted from one solid-state light source in a first direction; second light guide (22) configured to guide light emitted from the other solid-state light source in a second direction different from the first direction; and optical path conversion units (31 and 32) including total reflection surfaces for totally reflecting the lights guided by the first light guide and the second light guide to enter the lights into third light guide (50). A projection display apparatus that uses the illumination optical system thus configured can enter light emitted from a plurality of light sources straight into an image forming element by one optical system.

Abstract: In an image display apparatus of the invention, a signal input unit outputs a complex image signal, which has been converted to an easily-processed format, to a signal-for-display generator. The signal-for-display generator converts the complex image signal to a signal suitable for displaying at a display unit. An apparatus state-detector detects a state of the display apparatus. Based on apparatus state information input from the apparatus state-detector, an arithmetic unit calculates an amount of non-uniformity to be corrected, and outputs it to a non-uniformity corrector. Based on the non-uniformity correction amount corresponding to a position displayed at the display unit, the non-uniformity corrector corrects the image signal input from the signal-for-display generator, converts it to a signal format that can be used at the display unit, and outputs it.

Abstract: A multi-screen display device forms a large screen by adjacently arranging a plurality of display devices on a frame by engaging a monitor fixing provided on a back surface of a display device with a bracket that is provided on the frame; the monitor fitting that includes a plate-like body that is provided so as to project out from the back surface of the display device and a long hole that is formed in the plate-like body along with a lateral direction of the display device, is arranged at corner portions of the back surface of the display device; and the bracket includes a plate-like body that is perpendicularly provided at a position corresponding to the monitor fixing and a pin member that is provided in a standing manner in a vertical direction on the plate-like body, and is inserted in the long hole of the monitor fixing.

Abstract: The present invention has the object of providing a technology that can facilitate inexpensive shields of individual electronic components with good heat exchange efficiency, the electronic circuit board according to the present invention being provided with: a plurality of conductor parts in a standing state that can extend and contract on a ground pattern that surrounds an electronic component on the electronic circuit board, a conductive plate, and securing members for holding the plate such that the plurality of conductor parts contact the plate in a state in which the conductor parts contract from their natural length.

Abstract: The present invention provides a liquid crystal display device capable of shortening the time required for stabilizing the brightness and the chromaticity to the temperature change. The input of an LED driver is connected to the output of a PWM controller, so that the electric power supplied to the respective LED groups of red, green and blue are controlled with a PWM method.

Abstract: A package unit includes: a thin packaged product in which a thin display device is packed; an individual packaging pallet formed in a substantially rectangular shape corresponding to a shape of the packaged product loaded, the individual packaging pallet including fork insertion openings in a side surface in a long side direction thereof; and a loading pallet formed in a substantially rectangular shape corresponding to a shape of a plurality of package bodies including the packaged product and the individual packaging pallet, the package bodies loaded side by side, the loading pallet including fork insertion openings in both of a side surface in a long side direction thereof and a side surface in a short side direction thereof.

Abstract: An object of the present invention is to provide illumination optics that enables improvement in brightness and reestablishment of an irradiation state which is provided with illumination light and which corresponds with a display area, and is to provide illumination optics including a first fly-eye lens and a second fly-eye lens where emission light from the first fly-eye lens enter, wherein at least one of lens elements configuring the second fly-eye lens covers an irradiation area smaller than an irradiation area provided by the second fly-eye lens.

Abstract: A display device includes a display section, a frame casing including first and second divided frames, each of the first and second divided frames including first and second holes along a width direction of the frame casing, the first hole being closer to a back surface of the display section than the second hole, the first and second divided frames being attached to the display section by screws passing through the second holes, and a glass plate provided between a front surface of the display section and the frame casing.

Abstract: A cooling device is provided that can thin a boundary layer and thus obtain the effect of sufficiently improving the heat transfer coefficient. The cooling device for an electronic apparatus that has a plurality of members juxtaposed such that the surfaces of the members confront each other, the surface of at least one member of these members having a heat discharge surface from which heat is discharged, includes: a duct (100) equipped with an opening (100a) whereby a first air flow emitted from the opening (100a) flows in a first direction along the heat discharge surface, and a duct (101) equipped with an opening (101a) whereby a second airflow emitted from the opening (101a) flows along the heat discharge surface in a second direction that intersects with the first direction. Taking as a boundary a line (200c) that passes through the center (200a) of the heat discharge surface, the center of the opening (101a) is located on the side opposite the side in which the opening (100a) is provided.

Abstract: A display device uses a field sequential color scheme. Assume that a panel video writing period defines a period from the start of writing image data into a display panel to the completion of displaying the image on the basis of the image data in a sub-frame. A light source driving circuit generates a driving signal for gradually increasing the luminance of a light source of a color corresponding to a displayed image in the present sub-frame from zero to a predetermined value within the panel video writing period of the present sub-frame and for gradually decreasing the luminance of the light source from the predetermined value to zero within the panel video writing period of the next sub-frame. A light source driver drives the light source to emit light in accordance with the driving signal.

Abstract: A format of an inputted video signal is estimated to be based on the total number of vertical lines, and a frequency dividing ratio of a PLL unit is provisionally set at a predetermined value corresponding to the estimated format. Next, the frequency dividing ratio is calculated so that a measured value of a horizontal display width that is measured by a video detecting unit matches a capture width which is the horizontal display width capturable by a frame memory, and the calculated frequency dividing ratio is converted to a multiple of 4. A phase adjustment of the regenerative dot clock is performed against the video signal based on the converted frequency dividing ratio by using the regenerative dot clock generated by the PLL unit.