Abstract: A method for making thin film filters having a negative temperature drift coefficient are the subject of the present invention. Such filters can achieve better optical control within an operational temperature range from ?5° C. to 70° C. degrees. A first embodiment of the present invention includes: 1. providing a substrate wafer which has a coefficient of thermal expansion (CTE) greater than that of a selected film stack material; 2. polishing the substrate wafer; 3. depositing thin film layers made of the film stack material on the substrate wafer at a temperature substantially higher than room temperature; 4. cooling the substrate-film stack laminate to room temperature, thus forming a convex-shaped laminate; 5. cutting the cooled laminate into pieces. A second embodiment includes the steps of: 1. providing a laminate composed of a glass substrate and a film stack; 2. using at least one ion beam source to bombard the film stack of the laminate with high energy ions; 3.

Abstract: A heat dissipation module for a mobile computer, the mobile computer having a base (10) and a display unit (20) pivotally coupled to the base, the base having a number of through holes (13) defined on a shell (18) thereof, the heat dissipation module including: a cooling fan (14) disposed near the through holes of the shell; and a heat pipe (15) having a evaporating section (52), a condensing section (56), and an intermediate section (54) connecting the evaporating section and the condensing section; wherein the evaporating section of the heat pipe is disposed between the shell and the cooling fan, and the condensing section of the heat pipe is disposed on the display unit of the mobile computer.

Abstract: A computer includes a motherboard, a heat-generating device mounted on the motherboard, a heat-conducting device attached to the heat-generating device for absorbing heat energy generated from the heat-generating device, and a thermoelectric converter coupled to the heat-dissipating device for converting the heat energy into electric energy for recycling use. The heat-conducting device includes a heatpipe. The heatpipe contains a working fluid, which has nano-sized particles therein. The nano-sized particles may be composed of carbon and/or a metallic material. The computer may include a heat-conducting plate interposed between the heatpipe and the heat-generating device. The thermoelectric converter may include a circuit with two strips connected in series, the strips each being formed of a different kind of thermoelectric metal. Corresponding ends of the two strips would be coupled to the heat-conducting device so as to receive heat energy therefrom.

Abstract: The present invention provides a surface light source (6) using a light guide plate (2) to illuminate a liquid crystal display. The light guide plate comprises a light incident surface (21), a light-emitting surface (22) perpendicular to the light incident surface, a bottom surface (23) opposite to the light-emitting surface, and a plurality of side surfaces. An anti-reflective coating is formed on the light incident surface and the light-emitting surface. A reflective coating is formed on the bottom surface and at least one of the side surfaces. The light guide plate provides a high luminace output for the liquid crystal display.

Abstract: A direct type backlight module (100) includes a housing (110), a reflection plate (130), a diffusion plate (120) and a plurality of lamps (140). The housing includes a window portion (113), a base portion (111) and a side portion (112). The side portion is located between edges (114) of the window portion and the base portion. The reflection plate is positioned in the housing, supported by the side portion, thereby dividing the housing into a first room (150) and a second room (155). The diffusion plate is located at the window portion of the housing. The lamps are positioned in the first room, between the diffusion plate and the reflection plate. A plurality of openings (170a, 170b) are defined in the side portion and communicate with the first room. Forced cooling air (172) is introduced into the first room to dissipate accumulated heat therefrom and into the external environment.

Abstract: A polarizer (2) for a liquid crystal display device includes a polarizer base (21), a first protective layer (20) and a second protective layer (22) on two sides of the polarizer base for protecting the polarizer base, and an anti-reflection layer (25) on the first protective layer. The anti-reflection layer includes a first layer (26), a second layer (27), a third layer (28) and a fourth layer (29) stacked in order. The anti-reflection layer of the polarizer can reduce the reflection of the light irradiated on the polarizer, and the loss of light can be reduced and higher light transmission rate can be achieved.

Abstract: A polarized light source system (20) includes a light guide plate (22), a light source (24), a lamp cover (25), a quarter wave plate (23), an upward prism plate (26) and a downward prism plate (28). The light guide plate defines an optical inputting surface and an optical outputting surface interconnecting therewith. The light source and the lamp cover are stationed next to the optical inputting surface. The upward prism plate stationed next to the optical outputting surface defines a plurality of upward micro-prisms (262) on a surface opposite thereto. The downward prism plate stationed next to the upward prism plate includes a brightness enhancing film (284), and a plurality of downward micro-prisms (282) on a surface facing the upward prism plate. The upward and downward micro-prisms engaged with each other. The quarter wave plate includes a reflective film on a backing surface.

Abstract: A mold (1) includes a substrate (10), a metal core (20), and a protecting film (30). The substrate is made of NEOCERAM®, a kind of material resistance to heat shock and difficult to crack. The substrate defining a cavity (101) therein and the metal core integrally fixed in the cavity. The substrate has a projecting part (102), and the top of the projecting part defines a molding cavity (103) whose surface is covered with the protecting film. A method for manufacturing such mold includes the following steps: forming a NEOCERAM cuboid; machining a projecting part at one end of the NEOCERAM cuboid; machining a molding cavity in the projecting part; defining a cavity in the cuboid and integrally fixing a metal core in the cavity; and covering the surface of the molding cavity with a protecting film made of boron nitride (BN).

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 mold for molding glass elements includes a substrate (1), a protecting film (2) and a cooling tube (10). The protecting film is formed on the substrate. The protecting film includes at least one noble metal layer (21) and at least one silicon carbide layer (22). The noble metal layer and the silicon carbide layer are alternately stacked one on the other in turn. The cooling tube is arranged in the substrate. The present invention also discloses another mold for molding glass elements including a substrate, a protecting film and a channel. The channel is defined in the substrate. The mold is inexpensive, can withstand high temperatures, and has a long service lifetime.

Abstract: A DWDM thin film filter includes a substrate (11) and a film stack (12). The film stack comprises a plurality of cavities (13). Each cavity includes a first group of mirror layers (21), a second group of mirror layers (22), and a spacer layer (23). Each group of mirror layers includes a plurality of high refractive index thin films (31) and low refractive index thin films (32) alternately deposited one on another. The material of the high refractive index films is a composition of indium-tin oxide. In the preferred embodiment, a thin film filter having 160 layers of film can be produced. Such a thin film filter attains the same or better optical characteristics as a conventional DWDM thin film filter having 180 layers of film.

Abstract: A light guide plate (3) includes a parallelepiped block. The block includes an input surface (31) for receiving light beams irradiated from a light source; two side surfaces perpendicularly adjoining the incident surface; an output surface (32) perpendicularly adjoining the incident surface and the side surfaces; and a bottom surface (33) opposing to the output surface. An array of prisms (34) is integrally formed on the output surface. Each prism is shaped as a square pyramid. All the prisms have a same size and are arranged contiguously with each other. Alternatively, the light guide plate may be a wedge-shaped block (3?). A rectangular array of prisms (34?) is integrally formed on an output surface (32?) thereof. Each prism is shaped as a square pyramid. The prisms are arranged contiguously with each other, and sizes of the prisms gradually decrease from a thick end to a thin end of the block.

Abstract: A light guide plate (10) includes a transparent plate (20), and a plurality of diffusing protrusions (30). The transparent plate includes an emitting surface (21), and a bottom surface (23) opposite to the emitting surface. The diffusing protrusions are distributed evenly on the emitting surface of the transparent plate, and are integrated with the transparent plate. The diffusing protrusions are hemispherical or sub-hemispherical, and a diameter of each diffusing protrusion is in the range from 10 ?m˜50 ?m. The light guide plate provides high emitting brightness and uniformity. The diffusing protrusions can diffuse light beams emitting from the emitting surface of the transparent plate, in order to achieve a plane light source having even brightness. The present Invention also discloses a method for fabricating the light guide plate.

Abstract: A planar surface illuminator (20) for installation below a liquid crystal display panel includes a light guide plate (22) and a plurality of light emitting diodes (21). The light guide plate has a bottom surface (223), an end surface (221) and a number of dots (23) formed on the bottom surface. The light emitting diodes are positioned adjacent the end surface to irradiate the light guide plate. Shortfall areas (223a) in the light guide plate between each two adjacent light emitting diodes are lightened by placing special dots (23a) therein, which special dots are made of melamine-based fluorescent particles. The melamine-based fluorescent particles function as small light sources, thus lightening the shortfall areas. The brightness of the planar surface illuminator is thereby balanced.

Abstract: An integrated circuit package includes a die mounted on a substrate, an integrated heat spreader set above the die, and an array of carbon nanotubes mounted between the die and the integrated heat spreader. The integrated heat spreader is fixed on the substrate, and includes an inner face. The array of carbon nanotubes is formed on the inner face of the integrated heat spreader. Top and bottom ends of the carbon nanotubes perpendicularly contact the integrated heat spreader and the die respectively. Each carbon nanotube can be capsulated in a nanometer-scale metal having a high heat conduction coefficient.

Abstract: A method for fabricating a molding core (700) for a light guide plate includes: (a) providing a substrate (500) having a photo-resist layer (600) coated thereon; (b) exposing and developing the photo-resist layer to form a photo-resist pattern (640); (c) coating a nickel film (720) on the substrate; (d) electroforming a nickel layer (740) on the nickel film; and (e) separating the nickel layer and film from the substrate and photo-resist pattern, the nickel layer and film thereby providing the core. The nickel film and the nickel layer use a same metal; that is, nickel. Thus, unlike in the prior art, there is no need for an etching step to remove the metal film after electroforming. The method has reduced complexity and cost. In addition, the pattern of the core is more similar to the predetermined pattern of the photo-mask. That is, the precision of the core is significantly increased.

Abstract: A surface light source (3, 4, 5) includes a light guide plate (32, 42, 52), which defines an incident surface (321, 421, 521), an emitting surface and a bottom surface (323, 423, 523) opposite to the emitting surface; and a light source (31, 41, 51) adjacent to the incident surface of the light guide plate for radiating light beams into the light guide plate through the incident surface. A multiplicity of generally rectangular dots (328, 428, 528) and generally circular dots (329, 429, 529) is formed on the bottom surface of the light guide plate. The rectangular and circular dots reflect and scatter the light beams in directions toward the emitting surface. The rectangular dots are distributed on the bottom surface corresponding to lower luminance areas of the light guide plate, so that the luminance over the whole emitting surface of the light guide plate is uniform.

Abstract: A backlight module (2) includes a light source (66) and a light guide plate (20), the light guide plate includes a light incidence surface (25), a light-emitting surface (21) adjacent to the light incidence surface; and a bottom surface (22) opposite to the light-emitting surface, the bottom surface includes a plurality of curved grooves (23), the light-emitting surface includes a plurality of grooves (24). In the backlight module, because of the curved grooves of the bottom surface and the grooves of the light-emitting surface, light beams entering the light guide plate are concentrated at the bottom surface and light-emitting surface, thus the surface light beams outputting from the light-emitting surface have a rather higher brightness.

Abstract: A back light module (3) includes a light guide plate (31) and a light source (30). The light guide plate includes a light incident surface (311), a light emitting surface (313), and a bottom surface (312) opposite to the light emitting surface. The bottom surface has a plurality of dissymmetric protrusions (314). The dissymmetric protrusions defines an angle a between a first side (3142) thereof and a reference line of a length of the light guiding plate, and an angle ? between a second side (3144) thereof and the reference line. The light guiding plate has high brightness and uniformity.

Abstract: A heat generator includes a heat generating member and a temperature compensating member made from different material. The heat generating member includes a heat flow output face for outputing heat flow and five heat flow insulation faces. The temperature compensating member encloses and contacts the heat generating member except the heat flow output face. A heat flow compensating circuit is electrically connected between the temperature compensating member and the heat generating member for maintaining a state of no heat flow flowing between the heat generating member and the temperature compensating member, whereby the heat energy of the heat flow outputing from the heat flow output face is equal to the heat energy of heat generated by the heat generating member.