Abstract: An apparatus for coupling a laser and an optical fiber and an optical signal transmission system and transmission method where the coupling apparatus is disposed between a laser and an optical fiber, where the coupling apparatus includes an optical signal transmission part whose inner refractive index changes gradually, where a refractive index becomes higher at a position closer to a principal axis of the optical signal transmission part; and the optical signal transmission part may be configured to shape an optical signal incident from the laser (including optical signal convergence or divergence), so that a mode field radius of the adjusted optical signal matches a core radius of the optical fiber, and the adjusted optical signal can be coupled into the optical fiber in high efficiency.

Abstract: A method and an apparatus for coupling an optical waveguide to a single-mode fiber are disclosed. The apparatus includes a substrate, a first optical waveguide, a single-mode fiber and a second optical waveguide. The first optical waveguide, the single-mode fiber and the second optical waveguide dispose on the substrate. One end of the single-mode fiber has an optical fiber taper structure. One end of the second optical waveguide is optically coupled to the first optical waveguide. Another end of the second optical waveguide is optically coupled to the single-mode fiber using the optical fiber taper structure of the single-mode fiber.

Abstract: The present invention provides an OLED array substrate, a manufacturing method thereof, an OLED display panel and an OLED display device. The OLED array substrate comprises a substrate and a plurality of pixel units provided thereon, each pixel unit comprising a TFT, and a first electrode, an organic light-emitting layer, a second electrode and an optical coupling layer sequentially arranged on the TFT, wherein the optical coupling layer comprises a bottom contacting with the second electrode and an arched top protruding towards a light-exiting direction. By forming the optical coupling layer of each pixel unit on the OLED array substrate to be the arched top optical coupling layer, the OLED array substrate, the manufacturing method thereof, the OLED display panel and the OLED display device of the present invention attenuates total reflection of light inside the optical coupling layer, thereby improving light extraction efficiency.

Abstract: The present disclosure provides an organic light emitting diode array substrate and its manufacturing method, as well as a display device. The organic light emitting diode array substrate includes: gate lines, data lines, and a plurality of pixel units defined by the gate lines and the data lines. Each pixel unit comprises a first region which emits light and a second region which does not emit light. The first region is provided with an organic light emitting diode, and the second region is provided with a conductive unit which is connected in parallel with the data line and arranged at the same layer with a cathode of the organic light emitting diode.

Abstract: An organic electroluminescent device and a manufacturing method thereof, a display apparatus are provided. The organic electroluminescent device includes a plurality of pixel units in an array form. Each of the pixel units includes a light emitting region and a transparent region, and each of the pixel units includes: a base substrate (1); a thin film transistor switch (2); a planarizing layer (3), a first electrode (4), a pixel defining layer (5), an organic layer (6) and a second electrode (7), disposed at a side of the thin film transistor switch (2) facing away from the base substrate (1) in this order. The first electrode (4) is positioned in the light emitting region (A) of the pixel unit; and at least one of the planarizing layer (3) and the pixel defining layer (5) is only disposed within the light emitting region (A) of the pixel unit. With the above organic electroluminescent device, transmittance of the transmissive region of each pixel unit is enhanced.

Abstract: An organic light-emitting diode (OLED) panel, a manufacturing method thereof and a display device are provided. The OLED panel comprises: a base substrate, a plurality of OLED units formed on the base substrate, and a reflective structure formed on the base substrate, disposed along the periphery of the OLED units and configured to partially or completely encircle the OLED units. The OLED unit includes an anode layer, an organic emission layer and a cathode layer. The reflective structure is provided with a reflective surface which is configured to reflect light emitted from a side terminal of the organic emission layer to the outside of the OLED panel. The OLED panel can improve the utilization rate of light emitted by the OLED units and hence improve the display quality of the OLED panel.

Abstract: An organic light-emitting diode (OLED) display panel and manufacturing method thereof. The method of manufacturing the OLED display panel comprises forming an anode (2), an organic light-emitting layer (3), a cathode (4) and a first optical coupling layer (5) sequentially on a substrate (1), and forming a second optical coupling layer (6) on a side, away from the cathode (4), of the first optical coupling layer (5) by arranging a plurality of protrusion structures with arc-shaped surfaces. Light that would be totally reflected from a surface of the first optical coupling layer are transmitted out through the protrusion structures with the arc-shaped surfaces of the second optical coupling layer, therefore the total reflection of the light is reduced, the light extraction efficiency is increased, and the external quantum efficiency of the device is improved.

Abstract: A method for manufacturing a distributed feedback laser array includes: forming a bottom separate confinement layer on a substrate; forming a quantum-well layer on the bottom separate confinement layer; forming a selective-area epitaxial dielectric mask pattern on the quantum-well layer; forming a top separate confinement layer on the quantum-well layer through selective-area epitaxial growth using the selective-area epitaxial dielectric mask pattern, the top separate confinement layer having different thicknesses for different laser units; removing the selective-area epitaxial dielectric mask pattern; forming an optical grating on the top separate confinement layer; and growing a contact layer on the optical grating. The present disclosure achieves different emission wavelengths for different laser units without significantly affect emission performance of the quantum-well material.

Abstract: A method for manufacturing a distributed feedback laser array includes: forming a bottom separate confinement layer on a substrate; forming a quantum-well layer on the bottom separate confinement layer; forming a selective-area epitaxial dielectric mask pattern on the quantum-well layer; forming a top separate confinement layer on the quantum-well layer through selective-area epitaxial growth using the selective-area epitaxial dielectric mask pattern, the top separate confinement layer having different thicknesses for different laser units; removing the selective-area epitaxial dielectric mask pattern; forming an optical grating on the top separate confinement layer; and growing a contact layer on the optical grating. The present disclosure achieves different emission wavelengths for different laser units without significantly affect emission performance of the quantum-well material.

Abstract: Disclosed herein are novel methods, assays and systems for detecting an increased risk for Alzheimer's disease (AD) in a subject by identifying at least one nuclei acid polymorphism described herein in a biological sample from the subject. Levels of the genes associated with the nucleic acid polymorphism described herein are also determined for detection of higher risk for AD. Disclosed herein further provides methods for treating AD by administering to a subject in need thereof with ATXN1.

Abstract: A tetrahydroprotoberberine quaternary ammonium compound represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R' and X are as defined in the specification. A method of preparing the compound is provided. The compounds can suppress arrhythmia and ventricular fibrillation, protect against myocardial ischemia, and can be conveniently orally administered.