Abstract: A semiconductor strip laser and a semiconductor component are disclosed. In embodiments the laser includes a first semiconductor region of a first conductivity type of a semiconductor body, a second semiconductor region of a second different conductivity type of the semiconductor body, at least one active zone of the semiconductor body configured to generate laser radiation between the first and second semiconductor regions. The laser further includes a strip waveguide formed at least in the second semiconductor region and providing a one-dimensional wave guidance along a waveguide direction of the laser radiation generated in the active zone during operation, a first electric contact on the first semiconductor region, a second electric contact on the second semiconductor region and at least one heat spreader dimensionally stably connected to the semiconductor body at least up to a temperature of 220° C., and having an average thermal conductivity of at least 50 W/m·K.

Abstract: A laser oscillator configured to limit a mode hopping over a long duration. A laser oscillator has an optical resonator including an output coupler and a rear mirror positioned on an optical axis, at least one folding mirror positioned on the optical axis and between the output coupler and the rear mirror, and a discharge tube positioned between the output coupler or the rear mirror and the folding mirror. At least one folding mirror has a toric surface shape, a saddle surface shape or a cylindrical shape, and is configured to rotate about a straight line as a rotation axis, which extends through one point on a surface of the folding mirror and is perpendicular to the surface of the folding mirror.

Abstract: A technique related to a semiconductor chip is provided. An optical gain chip is attached to a semiconductor substrate. An integrated photonic circuit is on the semiconductor substrate, and the optical gain chip is optically coupled to the integrated photonic circuit thereby forming a laser cavity. The integrated photonic circuit includes an active intra-cavity thermo-optic optical phase tuner element, an intra-cavity optical band-pass filter, and an output coupler band-reflect optical grating filter with passive phase compensation. The active intra-cavity thermo-optic optical phase tuner element, the intra-cavity optical band-pass filter, and the output coupler band-reflect optical grating filter with passive phase compensation are optically coupled together.

Abstract: An LCD device provides enhanced display quality. An insulating layer is formed on a first substrate. The insulating layer covers the contact portion of a switching device in which the switching device is electrically connected to a transparent electrode and has an opening for exposing a portion of the transparent electrode. A reflection electrode is electrically connected to the transparent electrode through the opening. The insulation layer covers a first portion of a driving circuit formed on the first substrate. A sealant is interposed between the first and second substrate to engage the first and second substrate and to cover a second portion of the driving circuit. Therefore, the driver circuit may operate normally, and the distortion of the signal outputted from the driver circuit may be prevented.

Abstract: In a liquid crystal display device, a reflecting surface is attached to a portion, which overlaps with a periphery portion of a light guiding plate where the light incident section is position in a surface on the light guiding plate side in the dispersing sheet which is positioned farthest to the light guiding plate side among a plurality of optical sheets which are positioned between the light guiding plate and a liquid crystal panel. As a result, light which is emitted from the periphery portion of the light guiding plate is returned into the light guiding plate by being reflected by the reflecting surface, and after this, is emitted as illumination light from a light emitting surface while progressing within the light guiding plate.

Abstract: According to one embodiment, a liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a first color filter and a second color filter. The first substrate includes an organic insulating film, a first pixel electrode and a second pixel electrode. The organic insulating film includes a first projection portion located opposite to the boundary between the first color filter and the second color filter, extending along the boundary, and projecting toward the second substrate.

Abstract: A configuration is provided with a laser medium 1 of a refractive index nc that is an isotropic medium and includes an upper surface and a lower surface, where at least one of the upper surface and the lower surface is bonded with a cladding 2 having a refractive index satisfying a relationship of no<nc<ne or ne<nc<no. This allows selective output of only polarized light generated by a refractive index in the cladding 2 smaller than the refractive index nc at a desired wavelength (e.g. 1535 nm) which can be implemented by using the isotropic medium.

Abstract: The present application describes a multi wavelength apparatus. The apparatus includes a pump laser, a first seed laser and a second seed laser. Each of the first and second seed lasers had wavelengths longer than the pump laser. The apparatus also includes a first multiplexer. The apparatus also includes first and second controllers configured to respectively control outputs of the first and second seed lasers. The apparatus also includes a first fiber configured to receive an output of a first multiplexer. The apparatus also includes a second multiplexer configured to receive the output of the first fiber. The apparatus also includes a second fiber configured to receive the output of the second combiner. The second fiber can emit light at either the first seed wavelength or the second seed wavelength. The present application is also directed to a method for controlling an output of a laser apparatus.

Abstract: A display apparatus comprises a display panel. The display panel emits a green light having a green energy and a green point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a green image, and emits a blue light having a blue energy and a blue point of the CIE 1931 xy chromaticity under the operation of the highest gray level of a blue image. The ratio of the green energy to the blue energy is between 0.7 and 1.5, and the coordinates of the green point in the CIE 1931 xy chromaticity diagram are bounded by the equation: y=?48.85x2+21.987x?1.7766 and the equation: y=?48.85x2+27.849x?3.2717, while y is between 0.68 and 0.72.

Abstract: There is provided a curved display device including a first substrate, a thin film transistor (TFT) disposed on the first substrate, a pixel electrode connected to the TFT, a second substrate facing the first substrate, a common electrode positioned on the second substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the pixel electrode includes a cross-shaped stem portion including a horizontal stem portion and a vertical stem portion intersecting the horizontal stem portion and a plurality of fine branches extending from the cross-shaped stem portion, each of the fine branches includes a first portion and a second portion having a width greater than that of the first portion, and the first portion is connected to the cross-shaped stem portion.

Abstract: A potassium fluoroboratoberyllate crystal oblique-incidence laser frequency multiplier, comprising: a flake-like potassium fluoroboratoberyllate crystal having parallel front and back polished surfaces; a front antireflection film and a back antireflection film; a columnar crystal support provided with a square holding slot and a light through-hole; and external heating jackets; the crystal is disposed in the square holding slot, the front and back surfaces of the crystal conforming to a main surface of the square holding slot, a normal of the main surface of the holding slot forming an angle ? with the central axis of the crystal support; a laser at a fundamental frequency passes through the front antireflection film, and a frequency-multiplied laser generated in the crystal is transmitted out through the back antireflection film. The present invention has a simple structure and a low cost, and is suitable for medium- and high-power laser systems.

Abstract: A femtosecond laser based laser processing system having a femtosecond laser, frequency conversion optics, beam manipulation optics, target motion control, processing chamber, diagnostic systems and system control modules. The femtosecond laser based laser processing system allows for the utilization of the unique heat control in micromachining, and the system has greater output beam stability, continuously variable repetition rate and unique temporal beam shaping capabilities.

Abstract: The multi wavelength laser device includes a laser light source 10 that emits a plurality of laser lights 20 whose fundamental wavelengths differ from one another, a dispersing element 30 that changes the traveling direction of each of the plurality of laser lights according to the wavelength and the incidence direction, and that emits the laser lights in a state in which the laser lights are superposed on the same axis, and a wavelength conversion element 40 that has a plurality of polarization layers disposed therein and having different periods, and that performs wavelength conversion on the fundamental wave laser lights emitted from the dispersing element 30 and placed in the state in which the laser lights are superposed on the same axis, and emits a plurality of laser lights 50 acquired through the wavelength conversion in a state in which the laser lights are superposed on the same axis.

Abstract: Discussed is a display panel capable of preventing a substrate from being directly exposed to the external and preventing a light leakage. The display panel according to an embodiment includes a lower substrate and an upper substrate coupled to each other and configured to display images; an optical film attached to an upper surface of the upper substrate; and a panel protection member for covering side faces of the lower and upper substrates, wherein at least one side of the optical film extends beyond a side face of at least one side of the upper substrate.

Abstract: A liquid crystal device includes an element substrate, a counter substrate, a liquid crystal disposed between the substrates, a sealing material disposed in the spacing between the element substrate and the counter substrate and sealing the liquid crystal, a gas barrier layer disposed outside of the sealing material to cover the outside of the spacing and having a portion located in the spacing, and an gap region defined in at least a portion of the space between the sealing material and the gas barrier layer.

Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel, a cover panel, a container case fixed to the cover panel and covering the liquid crystal display panel, and a backlight unit disposed in the container case and opposed to the liquid crystal display panel. The container case includes a bottom wall, and a sidewall directly opposed to at least one edge of the backlight unit with a gap interposed therebetween. At least one of a reflective sheet, light guide plate, and optical sheet of the backlight unit is opposed to the sidewall of the container case with the gap interposed therebetween, and is contained in the container case in a relatively displaceable manner with respect to the container case and the liquid crystal display panel.

Abstract: A wavelength-tunable vertical-cavity surface-emitting laser (VCSEL) with the use of microelectromechanical system (MEMS) technology is provided as a swept source for Optical Coherence Tomography (OCT). The wavelength-tunable VCSEL comprises a bottom mirror of the VCSEL, an active region, and a MEMS tunable upper mirror movable by electrostatic deflections. The bottom mirror comprising a GaAs based distributed Bragg reflector (DBR) stack, and the active region comprising multiple stacks of GaAs based quantum dot (QD) layers, are epitaxially grown on a GaAs substrate. The MEMS tunable upper mirror includes a membrane part supported by suspension beams, and an upper mirror comprising a dielectric DBR stack. The MEMS tunable quantum dots VCSEL can cover an operating wavelength range of more than 100 nm, preferably with a center wavelength between 250 and 1950 nm, and the sweeping rate can be from a few kHz to hundreds of kHz, and up to a few MHz.

Abstract: A thermal stabilization system for a packaged diode laser. An outer thermoelectric cooler (TEC) stabilizes the temperature of the laser package and an inner TEC stabilizes the temperature of the laser diode element of the packaged laser. The inner and outer TECs may be controlled by electronics which is also stabilized in temperature, for example using resistive heating. The packaged laser may be mounted on a heat spreader mounted on the outer TEC and may be surrounded by an insulated covering on all sides other than the surface mounted on the heat spreader. There may also be a thermally conductive cap over the packaged laser, with the insulation arranged outside the cap if both are present.

Abstract: An element substrate is provided, including a substrate, a metal layer, a planarization layer and a first conductive layer. The metal layer is disposed on the substrate. The planarization layer is located on the metal layer, wherein the planarization layer includes a contact hole, the contact hole has a continuous wall and a bottom, the bottom exposes the metal layer, and the bottom of the contact hole has a first width. The first conductive layer is located on the planarization layer, wherein the first conductive layer includes an opening, the opening exposes the contact hole, and the opening has a second width above the contact hole, wherein the relationship of the first width and the second width is modified to decrease illumination loss and to prevent problems of shot-circuiting and insufficient capacitance.

Abstract: A liquid crystal display includes a first field generating electrode and an opposed electrode facing each other with a liquid crystal layer interposed therebetween, a shielding electrode line separated from the first field generating electrode, and a second field generating electrode including a plurality of branch electrodes overlapping the first field generating electrode, where the first field generating electrode includes at least one step portion adjacent to and facing the shielding electrode line.