Abstract: A backlit keyboard includes light guide plates; an opaque support plate including spaces each with the light guide plate disposed therein; a plurality of light emitting elements disposed on the concavity and embedded within the light guide plate; a circuit board secured onto the support plate to cover the light guide plates; keycaps above the circuit board and each including two limit members at two sides respectively; and a housing frame including openings each with the keycap slidably disposed thereon, and spacers each formed at either side of the opening of the housing frame. The spacer is fitting between two adjacent limit members that belong to each adjacent keycap and urges against the circuit board.

Abstract: A backlit keyboard includes light guide plates; an opaque support plate including spaces each with the light guide plate disposed therein; a plurality of light emitting elements disposed on the concavity and embedded within the light guide plate; a circuit board secured onto the support plate to cover the light guide plates; keycaps above the circuit board and each including two limit members at two sides respectively; and a housing frame including openings each with the keycap slidably disposed thereon, and spacers each formed at either side of the opening of the housing frame. The spacer is fitting between two adjacent limit members that belong to each adjacent keycap and urges against the circuit board.

Abstract: A backlight assembly includes an upper reflective layer including a plurality of first openings; a lower reflective layer secured to the upper reflective layer; a light guide plate disposed between the upper and lower reflective layers; an opaque shading layer disposed on one surface of the upper reflective layer; and a circuit board disposed above the shading layer and including a circuit and a plurality of second openings. Light with enhanced brightness is transmitted to bottoms of keycaps of an input device of a 3C product with energy consumed to a minimum during light transmitting.

Abstract: A switch of nonmetallic macromolecular conductive material being water-resistant and resistant to oxidation includes a circuit board having electronic circuitry and a plurality of electrical contact assemblies on a top surface; and a plurality of elastic members mounted on the circuit board and each including a bottom opening, and a stem on a bottom of a top extending downward toward the bottom opening. Each electrical contact assembly is surrounded by the elastic member and the circuit board. An electrically conductive member made of nonmetallic macromolecular conductive material is formed on a bottom of the stem. An electrical contact made of nonmetallic macromolecular conductive material is formed on each electrical contact assembly. A process of manufacturing same is also included.

Abstract: A backlight assembly is provided with upper and lower reflective layers secured together and folded to form a concealed space; a light guide layer in the space and including at least one light entrance; an opaque blocking layer at either side portion joining the upper and lower reflective layers; and at least one light source each at the light entrance. Light emitted by the light source travels to the light entrance, and further travels to predetermined areas via paths defined by the upper and lower reflective layers. Light leaking is decreased to a minimum during light transmitting.

Abstract: A backlight assembly is provided with an upper reflective layer including a plurality of transparent areas; a lower reflective layer secured to the upper reflective layer; a light guide plate disposed between the upper and lower reflective layers; a light source disposed under the lower reflective layer and corresponding to the transparent areas; a circuit board disposed above the upper reflective layer and including a plurality of first openings and a plurality of electrical contacts; and an opaque shading layer disposed on the circuit board and including a plurality of elastic members aligned with the electrical contacts, and a plurality of second openings. Light with enhanced brightness is transmitted to bottom of keycaps of an input device of a 3C product with energy consumed to a minimum during light transmitting.

Abstract: A backlight assembly is provided with an upper reflective layer including a plurality of first openings; a lower reflective layer secured to the upper reflective layer; a light guide plate disposed between the upper and lower reflective layers; an opaque shading layer disposed on one surface of the upper reflective layer; and a circuit board disposed above the shading layer and including a circuit and a plurality of second openings. Light with enhanced brightness is transmitted to bottoms of keycaps of an input device of a 3C product with energy consumed to a minimum during light transmitting.

Abstract: A backlight assembly is provided with an upper reflective layer including a plurality of first openings; a lower reflective layer secured to the upper reflective layer; a light guide plate disposed between the upper and lower reflective layers; an opaque shading layer disposed on the upper reflective layer and including a circuit and a plurality of second openings; and a light source disposed under the lower reflective layer. The first openings are aligned with the second openings and communicate therewith. Light with enhanced brightness is transmitted to bottom of keycaps of an input device of a 3C product with energy consumed to a minimum during light transmitting.

Abstract: An electrically conductive structure is provided with a hollow elastic member including an open bottom, a cavity, a pillar extending downward from a center of an inner surface into the cavity, a top platform, at least one hole open to the cavity, and a silver layer formed on a bottom of the pillar. Advantages such as elimination of short circuit and without heavy key depressing are obtained.

Abstract: A backlight module is provided with at least one light guide plate each including a plurality of openings; a white reflective film bent to conceal the at least one light guide plate and including a plurality of circuitries, a plurality of paired conductive terminals and a plurality of through holes; and at least one illumination unit disposed under the at least one light guide plate, each of the at least one illumination unit including a circuit member and a plurality of LEDs each disposed in one of the openings. The light emitted by the LEDs is directed to the at least one light guide plate and is further directed out of the white reflective film via the through holes.

Abstract: A method of manufacturing an elastic component substrate includes following steps. An elastic component is provided, and a heat process is applied to the elastic component. A light-curing adhesive glue layer is smeared on a bottom of the elastic component, which a Shore A hardness value of the light-curing adhesive glue layer is lower than 90, and the elastic component is disposed on a surface of a substrate. The light-curing adhesive glue layer is cured by irradiating light on the light-curing adhesive glue layer, and the elastic component is adhered on the surface of the substrate by the light-curing adhesive glue layer.

Abstract: A backlight module is provided with at least one light guide plate each including a plurality of openings; a white reflective film bent to conceal the at least one light guide plate and including a plurality of circuitries, a plurality of paired conductive terminals and a plurality of through holes; and at least one illumination unit disposed under the at least one light guide plate, each of the at least one illumination unit including a circuit member and a plurality of LEDs each disposed in one of the openings. The light emitted by the LEDs is directed to the at least one light guide plate and is further directed out of the white reflective film via the through holes.

Abstract: A method for controlling light emission of a light sensing keyboard is to save in advance a driving correlation table including a plurality of driving codes in the light sensing keyboard. Each driving code corresponds to a trigger signal and is triggered by the trigger signal to generate a driving signal which defines a light emission mode. When a light detection unit detects ambient light parameters, the trigger signal is generated and the driving code corresponding to the trigger signal is read from the driving correlation table. A control unit generates the driving signal according to the driving code to drive light emission elements to emit light and also control each light emission element to execute the light emission mode corresponding to the driving signal, thereby synchronous or asynchronous colored light alteration can be generated to provide flickering or alternate light alteration effect.

Abstract: A wireless communication keyboard includes a key module and a wireless communication module. The key module has a plurality of keys each can be depressed by a user to output a keyboard command. The key module also has a press combination including at least two keys which are depressed by the user at the same time to output a target search command. The wireless communication module is connected to the key module to receive the keyboard command and target search command, and has a linkage target setting state to search a linkable information device within a linkage range upon receiving the target search command. Thus user can quickly search the linkable information device through the press combination.

Abstract: An audio speaker is implemented as a front or rear mounting type speaker. In one embodiment, the front mounting type speaker includes a U yoke; a frame mounted on the top periphery of the U yoke; a magnet secured onto the bottom of the U yoke; a pole piece mounted on the magnet; a voice coil mounted around the pole piece and spaced therefrom, the voice coil having a coil section and a non-coil section; a damper interconnecting an inner, intermediate stage of the frame and the non-coil section, an inner support mounted on an inner, upper stage of the frame; a diaphragm having an inner edge secured to the non-coil section above the damper; and a surrounding suspension member interconnecting the inner support and an outer edge of the diaphragm. The damper has a width equal to or greater than that of the suspension member in either type.

Abstract: A low profile audio speaker having a power less than 5W includes a concave chassis; a magnet secured onto a bottom of the chassis; a top plate mounted on the magnet; a mounting flange secured to a peripheral edge of the chassis; an outer peripheral corrugation having an outer edge secured to the mounting flange; a central diaphragm secured to the peripheral corrugation; and a voice coil extending downward from the diaphragm toward the chassis with the magnet and the top plate being surrounded. The peripheral corrugation is formed of PEI, PEN, PET, foam, or fabric. The peripheral corrugation is shaped as a circle or an oval. The peripheral corrugation includes at least two grooves and alternate ridges with the outermost ridge being flattened to be secured onto the top of the mounting flange. The diaphragm is formed of PEI, PEN, PET, foam, or fabric.

Abstract: A superior slim type of speaker comprises: a baffle, a hole being disposed at a center of the baffle, an vibrating system being disposed at an inner edge of the hole; a voice coil, a periphery of a bottom surface of the vibrating system being connected to a top edge of the voice coil, an outer edge of the voice coil being set a coil, the voice coil being adjacent to two sides of an outer edge of the coil, and the two sides being connected to two lead wires respectively; and a U-type iron member, a loop groove is disposed at a top periphery of the U-type iron member, two sides of the U-type iron member has two gaps respectively, and at least one side of each of the two gaps has an isolating portion; wherein when the U-type iron member is disposed at a bottom of the baffle, the voice coil is elongated to the loop groove in order to let the lead wires outwardly pass through the gaps and be upwardly fastened at a bottom surface of the baffle.

Abstract: A loudspeaker with high power efficiency and low resonance frequency is achieved by having a damper directly or indirectly sleeving beside a coil on a voice coil so that gravity center of loudspeaker is low and stable and the voice coil does not dislocate easily to keep acoustic performance of the loudspeaker excellent without acoustic distortion and to shorten the length of the voice coil. Moreover, a U-yoke attaches a frame in form of an insertion combination to shorten the loudspeaker at joints. Thereby, the depth of the loudspeaker is significantly reduced in size.

Abstract: A portable audio playing device which is able to play music directly by low-power source or even without being connected to power supply such as USB. The device includes an out source DC force serially connected to a source selector with a Pre-Amp and a power system distribution and regulator. A power management block is connected between the out source DC force and the power system distribution and regulator. The power management block is connected to a battery charger, a battery cell and a DC converter charge pump which is connected to the power system distribution and regulator and the power stage or driver. The device proceeds charging steps during playing music and can also be used outdoor by gaining enough power to the source selector and the power stage or driver from the power management block.

Abstract: The present invention Structure Improvement for Speaker Unit is disclosed. The speaker unit includes voice coil and housing of yoke as the main body, and above the circular slot hole that is used to accommodate the voice coil and yoke is bond with a surround and a diaphragm, the inner and outer fringes of its surround respectively formed the first skirt and the second skirt, so its surround incorporates the first skirt and the fringe of circular slot hole in the way of lap joint, and the inner fringe of the second skirt is provided for the joint of the diaphragm; the key point is: the out fringe of the diaphragm fitted to form a third skirt, thereby the diaphragm combines the surround as a configuration due to the binding between the third lap and the second skirt in the way of lap joint, besides a definite region for coating, support and fix emerged by setting the outer fringe of the diaphragm, so as to facilitate the operation for coherence between the membrane and the surround.