Abstract: An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The light-emitting die package is disposed to illuminate the keycap through the base plate. The light-emitting die package comprises a warm color temperature light-emitting die and a cold color temperature light-emitting die, and the light-emitting dis package extends along an arrangement direction. Each of the two light-emitting dies has a short side arranged adjacent to each other, with a long side of each of the two light-emitting dies facing a same direction and configured proximate to each other. A gap between the two adjacent short sides of the two light-emitting dies is not greater than either one of the two adjacent short sides of the two light-emitting dies.

Abstract: An optical keyswitch includes a keycap, a support mechanism, and a switch module. The support mechanism is disposed below the keycap and configured to support the keycap moving upward and downward, the support mechanism comprising a first frame and a second frame, the first frame having a sliding end. The switch module includes a circuit board, an emitter, and a receiver, the emitter and the receiver are electrically connected to the circuit board, and the emitter emitting an optical signal to the receiver. When the keycap is pressed, the first frame is driven by the keycap to slide substantially parallel to the circuit board and block the optical signal with the sliding end, so the switch module is triggered to generate a triggering signal.

Abstract: A luminous keyboard includes a keyswitch module and an optical module disposed under the keyswitch module. The keyswitch module includes a plurality of keyswitches. The optical module includes a mask film and a light guide sheet. The mask film has a mask pattern. The mask pattern defines a plurality of light-transparent regions respectively corresponding to the plurality of keyswitches, and an outer light-transparent region of the plurality of light-transparent regions has a boundary. The light guide sheet has a light-exit edge. The vertical projection of the light-exit edge of the light guide sheet on the mask film at least partially falls within the outer light-transparent region and is not parallel to the boundary.

Abstract: A USB device includes a base, a circuit board disposed on the base and having front-end and rear-end portions and a ground circuitry, an upper cover, solder points, a switch and a button mount. The rear-end portion is used for inserting into a connection port of a computer terminal. The upper cover covers the front-end portion and has an opening. The solder points are formed on the front-end portion and coupled to the ground circuitry. The switch having a metal cover is soldered to the solder points for controlling wireless connection between the computer terminal and an external device. The button mount is movably disposed through the opening and sleeves the front-end portion for triggering the switch. An electrostatic discharge entering from the opening can pass through a first guide hole of the button mount and is conducted to the ground circuitry via the metal cover and the solder point.

Abstract: An integrated-type coupled inductor is applied to a related manufacturing method and includes a lead frame, a first coil, a second coil and a magnetic packing component. The lead frame has a first surface and a second surface opposite to each other and includes four pins. The first coil is disposed on the first surface and coupled to two of the four pins. The second coil is disposed on the second surface and coupled to other pins. The magnetic packing component covers the first coil and the second coil to expose parts of the four pins.

Abstract: A backlight module applicable to a key module is provided, the key module includes a plurality of key units and a baseplate, and the plurality of key units are disposed on the baseplate. The backlight module includes a lower substrate, a plurality of periphery light sources disposed along the peripheral of the baseplate, and a shielding structure. The lower substrate is disposed below the baseplate, and there is an outer edge gap between an outer edge of the baseplate and the lower substrate. The periphery light sources are disposed between the baseplate and the lower substrate. The shielding structure is disposed outside those periphery light sources distributed, to prevent light provided by the plurality of light sources from being emitted out of the outer edge gap.

Abstract: A lighting keyboard includes a backlight module and a keyswitch. The backlight module includes two lighting units, a light guide panel, a lighting board and a micro-structure layer. The light guide panel includes two panel holes to accommodate the two lighting units. The light guide panel further includes at least one slot located between the two lighting units. The lighting board is disposed in parallel to the light guide panel, and the lighting board includes at least one pair of non-parallel main traces in electrical connection with the two lighting units. The micro-structure layer is disposed in parallel to the light guide panel, and the micro-structure layer includes at least one micro-structure region. The at least one micro-structure region is disposed between the two lighting units, and meanwhile the at least one slot of the light guide panel is at least partially located within the at least one micro-structure region.

Abstract: A lighting keyboard includes a backlight module and two rows of keyswitches. The backlight module includes a lighting board and a shielding sheet. The lighting board includes plural illuminants aligned into two rows to correspond to the two rows of keyswitches. The shielding sheet includes plural first outlet windows and plural first block patterns disposed within the first outlet windows respectively and form a first row pattern collectively. Each of the first block patterns respectively corresponds to one of the illuminant. The shielding sheet includes at least one second outlet window and plural second block patterns respectively disposed within the at least one second outlet window and formed a second row pattern collectively. Each of the plural second block patterns respectively correspond to one of the plural illuminants. A first window length of the entire contour of the plural first outlet windows is as long as a second window length of the at least one second outlet window.

Abstract: A protective cover for a tablet computer includes a main body, a peripheral device and a protective cover signal transmission member. The main body includes a first supporting member and a second supporting member connected to each other and can be opened and closed relative to each other. The peripheral device is disposed on the first supporting member. The protective cover signal transmission member is disposed on the second supporting member and electrically connected with the peripheral device. The second supporting member supports the tablet computer. The tablet computer includes a computer signal transmission member. The protective cover signal transmission member is used to dock with the computer signal transmission member to perform signal transmission. One of the computer signal transmission member and the protective cover signal transmission member is an electrical block, and the other is an electrical guide rail. A portable electronic device is also provided.

Abstract: A magnetic type keyswitch includes an actuating member and a switch unit. The actuating member is movable in response to a pressing force. The switch unit includes a circuit board, a Hall sensor electrically connected to the circuit board, and a magnet spaced apart from the Hall sensor by a fixed distance. When the pressing force is not applied, the magnet enables the Hall sensor to output a first voltage, and when the pressing force is applied, the actuating member moves relative to the magnet and the Hall sensor in response to the pressing force, so that the Hall sensor outputs a second voltage different from the first voltage, and the magnetic type keyswitch generates a triggering signal.

Abstract: A backlight module includes a lighting board, a light guide panel, a shielding sheet, and a protrusion structure. The lighting board includes two non-intersected traces, a plurality of microstructure regions and at least one illuminant unit. The illuminant unit is connected between the microstructure regions. The microstructure regions do not overlap with the two non-intersected traces. The light guide panel is disposed above the lighting board, and the shielding sheet is disposed above the light guide panel. The protrusion structure is formed on the shielding sheet, protrudes towards the lighting board, and is between the microstructure regions. The protrusion structure diffuses light of the illuminant unit at an early section of its light path to enter into the light guide panel for lateral transmission. The plural microstructure regions reflect and recycle the light at a following section of the light path to jointly enhance the uniformity of illuminating a keycap.

Abstract: A backlight module is configured to illuminate at least one keycap. The backlight module includes a shielding sheet, a lighting board and a protrusion structure. The lighting board includes an illuminant unit and a pair of footprints respectively connecting the illuminant unit. Each of the footprints includes at least one hollow area, and the at least one hollow area overlaps at least a portion of the illuminant unit. The protrusion structure is formed at the shielding sheet. The protrusion structure protrudes towards the light board and at least partially overlaps the pair of footprints, so that the backlight module diffuses light of the illuminant between the protrusion structure and the footprints.

Abstract: A backlit module for a backlit keyboard is provided. The backlit module includes a lighting board. The lighting board includes a substrate and an electronic device layer. The electronic device layer is disposed on the substrate. The electronic device layer includes a plurality of key circuit groups. Each of the key circuit groups corresponds to a key group of the backlit keyboard, and includes one or more light sources and a resistor. When the key circuit group includes a plurality of light sources, the light sources are arranged in parallel. The one or more light sources correspond to one or more key of the key group. The resistor is arranged in series with the one or more light sources.

Abstract: A keyswitch backlight structure includes a light-guiding layer, a reflective layer, and a transparent adhesive layer. The light-guiding layer has a bottom surface, a light-emitting surface opposite to the bottom surface, and a surface microstructure formed on the light-emitting surface. The reflective layer is disposed opposite to the bottom surface. The transparent adhesive layer is closely attached to and between the reflective layer and the light-guiding layer corresponding to the surface microstructure. An illuminated keyswitch structure includes base plate, a keycap, a supporting mechanism, and the above keyswitch backlight structure. The keyswitch backlight structure and the base plate are stacked. The supporting mechanism is connected to and between the base plate and the keycap for lifting the keycap relative to the base plate. Light entering the light-guiding layer exits the light-guiding layer through the light-emitting surface to illuminate a transparent indication area of the keycap.

Abstract: A backlight module is configured to illuminate at least one key cap. The backlight module includes a light emitting unit, a light guide plate and a lighting board. The light guide plate has a light guide hole for accommodating the light emitting unit. The lighting board has a pair of pads connected to the light emitting unit respectively. The lighting board includes a first reflective layer surrounding the light emitting unit and at least partially covering the pair of pads. Each of the pair of pads has a plurality of branches and at least one hollow area. The at least one hollow area overlaps with at least one part of the light emitting unit.

Abstract: A portable computer device includes a computer body, a keyboard, a backlight circuit board and a metal layer. The computer body has a wireless transceiver and a system ground terminal. The keyboard is mounted on the computer body. The backlight circuit board is disposed under the keyboard and is electrically connected to the computer body. The backlight circuit board has a plurality of light sources and a circuit trace. The circuit trace is electrically connected to the plurality of light sources. The wireless transceiver is located at a side of the backlight circuit board. The metal layer is formed on a position of the backlight circuit board where there is no circuit trace and is adjacent to the wireless transceiver. The metal layer is electrically connected to the system ground terminal for suppressing electromagnetic interference of the backlight circuit board to the wireless transceiver.

Abstract: An illuminant board includes a substrate, a circuit layer, a light guide plate, a plurality of microstructures and at least one illuminant. The substrate defines at least one key projection. The circuit layer is disposed on the substrate. The circuit layer includes at least one high-potential main conductive wire and at least one low-potential main conductive wire. The light guide plate is disposed opposite to the circuit layer. The microstructures are located between the light guide plate and the substrate. The illuminant is coupled to the circuit layer. The illuminant provides a luminous light inletting into the light guide plate, and a path of the luminous light is guided by the microstructures. The high-potential main conductive wire and/or the low-potential main conductive wire extend and pass through the key projection. Orthographic projections of the microstructures are located between the high-potential main conductive wire and the low-potential main conductive wire.

Abstract: A power conversion system (PCS) includes an alternating current (AC) power port, a first direct current (DC) power port, a second DC power port, a high voltage capacitor, a first DC converter, a second DC converter, a power inverter, and a microcontroller unit. The microcontroller unit adjusts a frequency of an AC power output by the power conversion system based on a voltage difference across the high voltage capacitor of the power conversion system to switch the frequency of the AC power between different frequencies.

Abstract: A power conversion system (PCS) is provided. A micro-control unit of the PCS obtains a current charged ratio of a rechargeable battery according to a state-of-charge (SOC) signal received from the rechargeable battery, and obtains an output power of the PCS according to the voltage and current detected by a voltmeter-and-current meter of the PCS. When the micro-control unit detects that the mains off-grid occurs, the following steps are performed: judging whether a current charged ratio of the rechargeable battery is greater than the first ratio; when it is determined that the current charged ratio is greater than the first ratio, judging whether the output power is less than a first power; and when it is judged that the output power is less than the first power, increasing a frequency of an alternating current output from an alternating current (AC) power port of the PCS, so that a photovoltaic (PV) inverter coupled to the AC power port stops outputting power.

Abstract: A microcontroller unit of a power conversion system (PCS) obtains a current charged ratio of a rechargeable battery according to a state-of-charge (SOC) signal received from the rechargeable battery, and obtains an output power of the PCS according to the voltage and current detected by a voltmeter-and-current meter of the PCS. When detecting mains off-grid, the microcontroller unit adjusts a frequency of an output alternating current of the power conversion system based on the output power and the current charged ratio of the charging battery, causing the frequency of the alternating current to switch between no less than three different frequencies. The greater current charged ratio of the charging battery, the lower the frequency the alternating current is switched to.