Abstract: Provided is an LED element which achieves high light extraction efficiency even at low operating voltages and which can be produced using a simple process. The LED element has a first semiconductor layer made of a p-type nitride semiconductor, a light-emitting layer made of a nitride semiconductor formed on the upper layer of the first semiconductor layer, a second semiconductor layer made of an n-type nitride semiconductor formed on the upper layer of the light-emitting layer, and a transparent electrode formed on the whole surface of the second semiconductor layer. The second semiconductor layer in at least a region that is in contact with the transparent electrode is made of AlnGa1-nN (0<n<1) and has an n-type impurity concentration larger than 1×1019/cm3.

Abstract: Provided are a semiconductor light-emitting element having an n-type nitride semiconductor layer capable of suppressing appearance of a crack than before, and a method for producing the same. The method includes a step (a) of forming a GaN layer on a growth substrate; a step (b) of forming a multi-layered film including a first layer of a nitride semiconductor containing In and a second layer formed of a nitride semiconductor on the GaN layer; a step (c) of forming a protective layer formed of a nitride semiconductor on the multi-layered film; and a step (d) of forming an n-type nitride semiconductor layer on the protective layer at a growth temperature higher than that in the step (b) and the step (c), wherein in the step (d), the multi-layered film is thermally decomposed to form an internal void.

Abstract: The LED element has a conductive layer formed on the upper layer of the support substrate; a conductive oxide film layer formed on the upper layer of the conductive layer and made of a material having a thermal expansion coefficient of 1×10?6/K or more and 1×10?5/K or less; a light-emitting layer; a third semiconductor layer made of an n-type nitride semiconductor formed on the upper layer of the light-emitting layer; and an electrode formed at a position facing the conductive oxide film layer in a vertical direction so that a bottom surface of the electrode is in contact with a portion of an upper surface of the third semiconductor layer.

Abstract: Disclosed herein are a nitride semiconductor device that operates at lower operating voltage and that has higher luminous efficiency. The nitride semiconductor device according to embodiments of the present invention has an electron supply layer composed of N-type semiconductor. The electron supply layer has a composition of AlxGa1-xN (where 0.01<x?1); a concentration of N-type impurity equal to or greater than 1×1019/cm3; and a thickness equal to or greater than 0.5 ?m. Further, the N-type impurity is preferably silicon (Si).

Abstract: The semiconductor light-emitting element includes: a substrate; a semiconductor layer that is provided over the substrate; a first electrode that is provided in contact with part of an upper surface of the semiconductor layer and includes a current supply part; a second electrode that is provided in part of a region vertically below a region where the current supply part is not provided, that is in contact with part of the semiconductor layer; and a first current blocking layer that is provided in a region including a region vertically below the current supply part and that is in contact with part of the semiconductor layer, wherein a contact resistance at an interface between the first current blocking layer and the semiconductor layer is higher than that at an interface between the second electrode and the semiconductor layer.

Abstract: The electronic device comprises a connection module to which the source device is connected via a cable conforming to a predetermined standard, and a condition determining and energy saving module configured to save energy used inside the device when a state of a signal output from the source device is a predetermined condition. And a switching module is configured to vary an upper limit of a charging current supplied to a power supply line of the cable to a current value which exceeds a normal value and to perform high-speed charging of the source device when energy is saved.

Abstract: According to an embodiment, a video display system includes a sink device and a source device. The source device transmits a video signal. The sink device has a plurality of operation modes regarding image processing, informs, when an operation mode is changed, the source device of information of a video format set in advance according to the changed operation mode and applies image processing according to the changed operation mode to the video signal received from the source device and outputs the video signal to a display.

Abstract: A light source device includes an excitation light source that generates excitation light, a phosphor wheel including a phosphor segment that generates fluorescent light by excitation of the excitation light, and a mirror that guides the excitation light from the excitation light source to the phosphor wheel and emits the fluorescent light from the phosphor wheel as illumination light. The phosphor wheel further includes an anisotropic diffusion and reflection unit that diffuses and reflects incident excitation light such that an optical path for the incident excitation light and an optical path for the diffused excitation light after incidence of the excitation light are not overlapped. The mirror includes a first region that reflects the excitation light and transmits the fluorescent light and a second region that transmits the fluorescent light and the diffused excitation light which the anisotropic diffusion and reflection unit has diffused and reflected.

Abstract: There is provided a light source device which, when a light source which excites a phosphor with excitation light and emits fluorescent light is used, reduces incidence of the excitation light to an excitation light source to increase an output of the excitation light and extend the life. The light source device is provided with a plurality of excitation light sources emitting excitation light and a phosphor changing excitation light to fluorescent light, and the excitation light sources are arranged so that each excitation light emitted from each of the excitation light sources asymmetrically enters an excitation light irradiation region on a phosphor. A mirror is installed on an optical path of unconverted excitation light reflected from the phosphor and returns the unconverted excitation light to the phosphor side, whereby the unconverted excitation light can be utilized as excitation light again.

Abstract: To provide a reliable high brightness and definition image display by inhibiting a possible increase in fan noise and promoting cooling of an upper, hot portion of a display panel module, various boards, and image processing electronic components, an image display includes a flat display panel module, a display surface side cover on a display surface side of the display panel module, a non display surface side cover on a non display surface side of the display panel module, a display driving board, a power supply board, and a cooling fan, wherein a case of the cooling fan is larger than a distance between the display panel module and the non display surface side cover in an area where the cooling fan is installed, and a first end of the case of the cooling fan closer to the non display surface-side cover is positioned above a second end of the case closer to the display panel module.

Abstract: For improving a cooling efficiency of a display panel in a flat-type image display, various substrates and an image display element are disposed within a thin-sized housing thereof, including: a display panel; a chassis supporting the display panel from a rear surface side thereof; a front surface-side cover on a front side of the display panel; a rear surface-side cover on a rear side of the display panel; an image display element connected to the display panel; a display driver substrate connected to the display panel, and on a surface thereof opposite to the chassis are provided circuit parts; a power source substrate, supplying driving power to the display driver substrate and the image display element, and on a surface thereof opposite to the chassis are provided circuit parts thereof; and a first insulator board opposite to the display driver substrates and the power source substrate of the chassis.

Abstract: A flat panel display apparatus includes a plasma display panel, a power supply substrate, a signal processing substrate, a Y sustaining substrate, and an X sustaining substrate. The power supply substrate, the signal processing substrate, the Y sustaining substrate and the X sustaining substrate are arranged at a back of the plasma display panel. When viewing the plasma display panel from the back, the power supply substrate is arranged at a center portion of the plasma display panel, the Y sustaining substrate is arranged at one of a left and right side of the plasma display panel, the X sustaining substrate is arranged at the other of the left and right side, and the signal processing substrate is arranged under the X sustaining substrate. A circuit substrate other than the power supply substrate, the Y sustaining substrate, and the X sustaining substrate is arranged under the power supply substrate.

Abstract: A flat panel display apparatus includes a plasma display panel, a power supply substrate, a signal processing substrate, a Y sustaining substrate, and an X sustaining substrate. The power supply substrate, the signal processing substrate, the Y sustaining substrate and the X sustaining substrate are arranged at a back of the plasma display panel. When viewing the plasma display panel from the back, the power supply substrate is arranged at a center portion of the plasma display panel, the Y sustaining substrate is arranged at one of a left and right side of the plasma display panel, the X sustaining substrate is arranged at the other of the left and right side, and the signal processing substrate is arranged under the X sustaining substrate. A circuit substrate other than the power supply substrate, the Y sustaining substrate, and the X sustaining substrate is arranged under the power supply substrate.

Abstract: Space is decreased in the direction of thickness on a side of a substrates mounted on a back of a flat panel display to adapt requirement for increasing and thinning its size, and most flat panel displays forcibly radiate heat with a fan provided thereon. The present invention provides a flat panel display having fewer heat radiating fans to secure a channel for causing a heat radiating air to flow. Portions where electronic circuit device on a back of a display panel are mounted are divided into three: left; center; and right portions; with a main frame as a border, the electronic circuit device are constructed of four module substrates, the substrate which is the greatest in heating value in the four module substrates (hereinafter referred to as a substrate) is arranged in the center portion and the substrates which are the smallest and the second smallest in heating value therein are arranged in the same portion.

Abstract: A large-screen image display apparatus includes a stand for supporting the display module, which has a leg portion. The leg portion of the stand is inserted into the main frame. The leg portion and the main frame are fastened together at a first screw hole formed through the leg portion. In addition, the leg portion and a fixing part of the outer frame are fastened together at a second screw hole formed through the leg portion. The first screw hole and the second screw hole are formed on different faces of the leg portion and at different heights. This can provide a large-screen image display apparatus with a less-wobble, high-safety, high-reliability, and low-cost stand-attaching structure.

Abstract: A flat-type image display, such as, a plasma display, a LCD display, an OLED display, etc.

Abstract: A video processing apparatus includes: a video processor configured to generate a video signal; an automatic image quality adjustment unit configured to determine a first image quality adjustment set value based on the video signal; a user image quality adjustment unit configured to determine a second image quality adjustment set value based on a user's operation; an image quality processor configured to perform an image quality adjustment on the video signal based on the first and second image quality adjustment set values; and a controller configured to: control the image quality processor to perform the image quality adjustment based on the first and the second image quality adjustment set values.

Abstract: To provide a reliable high brightness and definition image display by inhibiting a possible increase in fan noise and promoting cooling of an upper, hot portion of a display panel module, various boards, and image processing electronic components, an image display includes a flat display panel module, a display surface side cover on a display surface side of the display panel module, a non display surface side cover on a non display surface side of the display panel module, a display driving board, a power supply board, and a cooling fan, wherein a case of the cooling fan is larger than a distance between the display panel module and the non display surface side cover in an area where the cooling fan is installed, and a first end of the case of the cooling fan closer to the non display surface-side cover is positioned above a second end of the case closer to the display panel module.

Abstract: Space is decreased in the direction of thickness on a side of a substrates mounted on a back of a flat panel display to adapt requirement for increasing and thinning its size, and most flat panel displays forcibly radiate heat with a fan provided thereon. The present invention provides a flat panel display having fewer heat radiating fans to secure a channel for causing a heat radiating air to flow. Portions where electronic circuit device on a back of a display panel are mounted are divided into three: left; center; and right portions; with a main frame as a border, the electronic circuit device are constructed of four module substrates, the substrate which is the greatest in heating value in the four module substrates (hereinafter referred to as a substrate) is arranged in the center portion and the substrates which are the smallest and the second smallest in heating value therein are arranged in the same portion.

Abstract: A large-screen image display apparatus which comprises: a display module; an outer frame shaped so as to fit along the rim of the rear surface of the display module; a hollow, bar-shaped main frame for supporting the display module, which is arranged to extend vertically and fixed to the upper and lower portions of the outer frame and to the rear surface of the display module by a fixing part; and a stand for supporting the display module, which has a leg portion. The leg portion of the stand is inserted into the main frame. The leg portion and the main frame are fastened together by screwing a screw through a screw hole formed through the main frame and a first screw hole formed through the leg portion. In addition, the leg portion and a fixing part of the outer frame are fastened together by screwing a screw through a second screw hole formed through the leg portion and a screw hole formed in the fixing part of the outer frame.