Abstract: A surface emitting device includes a light source unit (21) and an optical light guide plate (22) coupling with light from the light source unit to produce a uniform light source surface. The light source unit comprises a light source (24) and a lamp cover (25). The lamp cover is substantially shaped as a hexahedron and defines a groove, which faces towards the light source. The groove is covered with a reflective film (255). With the reflective film, the groove functions as a concave mirror, and the light source is positioned along a focal line of the concave mirror.

Abstract: An electromagnetic interference (EMI) shielding enclosure (1) for a portable electronic device includes a first layer (10) and a second layer (12). The first layer is adjoins an underside of the second layer. The first layer includes an interface layer (101) and an inside layer (102) in which a great number of metal particles (1020) or thin metal plates are embedded. The second layer is joined with the interface layer of the first layer. Because the second layer and the interface layer are made of the same plastic material, very strong adhesion therebetween can be obtained. Moreover, the second layer is outside the first layer, the second layer protects the inside layer from impact and wear. As a result, EMI generated by the portable electronic device inside the EMI shielding enclosure reliably shielded over a long period of time. The present invention also discloses a method for making the shielding enclosure.

Abstract: The present invention relates to a reflective plate (23) and a backlight system (2) using the same. The reflective plate includes a substrate (232) and a reflective film (233). The reflective plate has a plurality of dots (231) formed thereon to diffuse light beams impinging thereon.

Abstract: A method of manufacturing a molded article with a decorative pattern thereon, includes the steps of: step (10), preparing a mold and a mask with a predetermined pattern thereon; step (11), mounting the mask in the mold; step (12), spraying ink or paint onto the mask to form a decorative pattern thereon; step (13), injecting a molten plastic into the mold to form a molded article body; and step (14), simultaneously transferring the decorative pattern from the mask onto the molded article body, and thus forming a molded article with a decorative pattern thereon.

Abstract: A light guide plate mold core (1) includes a main body (13) having a molding surface (12) and a plurality of concavities (13a) formed at the molding surface. The main body is made of a material whose thermal conductivity is limited in the range from 0.002 cal/cm.s.K. (calories/centimeter.second.Kelvin) to 0.009 cal/cm.s.K. The thermal conductivity of the material for the light guide plate mold core is less than that of stainless steel. Therefore the rate of spreading of heat in the light guide plate mold core is lower than that of a conventional light guide plate mold core, so that stresses within a formed light guide plate can be released more. Thus by using the light guide plate mold core, a light guide plate having a highly even bottom surface can be manufactured. A method for manufacturing the light guide plate mold core is also provided.

Abstract: A method for fabricating a light guide plate (LGP) includes: providing a substrate (300) having a thermal stripping layer (400) and a metal layer (500) sequentially coated thereon; coating a photo-resist layer (600) on the metal layer; exposing and developing the photo-resist layer to form a photo-resist pattern (620); etching the substrate to form a metal pattern (540); removing the photo-resist pattern; disposing the substrate having the metal pattern between a case mold (720) and a cover mold (740), wherein the metal pattern faces the cover mold; sealing the cover mold and the case mold around the substrate having the metal pattern, wherein a cavity (760) is defined between the cover mold and the substrate having the metal pattern, and molding an LGP (800) in the cavity; and separating the thermal stripping layer and substrate from the LGP, such that the metal pattern remains embedded in the LGP.

Abstract: An electromagnetic interference shield (1) for an electronic device includes a plastic base (12) and a shield layer (10) lapped over the plastic base. Wherein, the shield layer is composed of plastic and metal particles or metal flakes, and the metal particles or metal flakes are substantially tiny with an aspect ratio and a concentration for shielding electromagnetic waves from the electronic device.

Abstract: Provided is a liquid crystal display, comprises light sources (220) projecting light beam therefrom according to its contour. A diffusion board (230) is arranged with respect to the light source so as to diffuse the light beam projected thereon. The diffusion board has an incident surface and includes fluorescent sections with respect to the contour of the light sources.

Abstract: A tunable optical wavelength demultiplexer (10) has a plurality of demultiplexer units (113, 114, 115, 116) formed on a planar waveguide (111). Every demultiplexer unit comprises a plurality of input waveguide channels, a plurality of output waveguide channels, and a Bragg grating, said each input waveguide channel coupling with the Bragg grating at a different angle, and each output waveguide channel being a mirror image of a corresponding input waveguide channel. Bragg gratings of demultiplexer units are parallel each other. Corresponding input waveguide channels are parallel to each other. An adjustable mechanism (100) adjusts an input port (25) and output ports (271, 272, 273, 274) to couple with a desired input waveguide channel and corresponding output waveguide channels.

Abstract: A separation membrane for a battery includes a number of composite layers (10) attached to each other with adhesive (12). Each composite layer includes a number of molecular layers (14). Each molecular layer comprises carbon atoms (2), and lithium ions (3) intercalated therein.

Abstract: A light guide module (10) for use in a flat panel display (21) comprises a light guide pipe (20) having a light emitting surface (21), and a light incident surface (25) orthogonal to the light emitting surface. A light diffusion arrangement (30) is deployed over the light emitting surface and includes organic scattering balls (31) homogenously mixed within a bonding agent (33). At least a light source (60) is arranged adjacent the light incident surface to project light beams into the light guide module.

Abstract: A tunable filter device (10) has a plurality of input waveguide channels (141, 142, 143), a plurality of output waveguide channels (161, 162, 163) and a Bragg grating (13) which are formed in a planar waveguide (111). Every input waveguide channel couples with the Bragg grating at a different angle, and every output waveguide channel is a mirror image of a particular input waveguide channel. When input light transmits through a particular input waveguide channel, light of a particular wavelength is reflected by the Bragg grating to a corresponding, mirror image output waveguide channel.

Abstract: Provided is a liquid crystal display with a light emitting flat surface, including a light guide having the emitting surface (232) and a pair of end surfaces. A pair of light sources (220) is arranged correspondingly to the pair of end surfaces. The light guide forms two diffusion sections having different refractive indices, thereby creating a junction surface between the diffusion sections.

Abstract: A light guide plate (200) for use in a backlight system includes a light incident surface (201), a light exit surface (202), and a bottom surface (203) opposite to the light exit surface. The bottom surface has a multiplicity of hemispherical pattern-dots (204) provided thereon, which are arranged in a regular manner. A projection of each pattern-dot on the bottom surface is circular, and each pattern-dot has a height (D) less than a radius (r) of the circle. Preferably, a height-to-radius ratio of each pattern-dot varies in the range from 0.067˜0.86. Thus the brightness of light beams transmitting out from the light exit surface is enhanced. Other embodiments of the light guide plate are also detailed herein.

Abstract: A light guide plate (30) includes two opposite incident surfaces (31) for receiving light beams, an emitting surface (32) joining the two incident surfaces and a bottom surface (33) opposite to the emitting surface. The emitting surface has a V-shaped profile defined by two symmetric oblique plates (321, 322) slanting down toward each other at a predetermined angle. The surface light source incorporating the light guide plate is inexpensive and has higher intensity of illumination at the center region thereof. Thus a liquid crystal display incorporating the surface light source satisfactorily illuminate a main visible range thereof.

Abstract: A tunable optical filter (30) includes a thin film waveguide (10) and a ring (308) surrounding the thin film waveguide. The ring can be mechanically pressed inwardly toward or pulled outwardly away from the thin film waveguide by external radial forces (306). A central wavelength of the tunable optical filter can be tuned according to the external radial forces. The thin film waveguide includes a substrate (102) and a multi-layered thin film (104) deposited on the substrate. The multi-layered thin film includes high refractive index layers (106) and low refractive index layers (108) alternately superposed on one another to form the multi-layered structure.

Abstract: A piezoelectric tunable filter (10) includes a ring (12) made of piezoelectric material surrounding a thin film waveguide (14), and an actuator (17) surrounding the ring. The actuator generates acoustic waves which apply external radial forces on the ring. Because the ring has piezoelectric properties, a periodic, high frequency piezoelectric signal can be generated by the ring and input to the waveguide to produce lattice vibration of the waveguide. The vibration can generate a fluctuating pattern of refractive index in the thin film waveguide due to the modulating effect of the signal. Thus, a periodic radial force of a predetermined frequency produces a desired vibration of the thin films of the waveguide, which in turn produces a desired refractive index in each film, which accordingly changes an optical thickness of each film.

Abstract: A method for fabricating a mold comprises following steps: providing a base plate (100), forming recesses (200) in the base plate using a series of photo mask processes. These photo mask processes formed a plurality of holes, which cooperatively form recesses of a predetermined shape with high proximity.