Abstract: A knob mechanism includes an encoder and a light guide unit. The light guide unit includes a lower member tightly sleeved on the encoder, protruding out of a housing, and having an opening and an optical channel, and an upper ring sleeved on the lower member, and having a light incident surface connected to the optical channel and a light transmitting surface spaced apart from the light incident surface. A rotary rod of the encoder protrudes out of the lower member through the opening. A knob is engaged to the rotary rod and is operable to rotate the same about an axis. Light irradiating the lower member propagates through the optical channel, into the light incident surface, and then out from the light transmitting surface in radial directions.

Abstract: An electronic device capable of matching a multimedia playback device is disclosed. The electronic device comprises a slot, a connecting port, a sliding cover, a positioning device, and an identification device. The slot is used to accommodate the multimedia playback device. The connecting port is used to electrically connect the multimedia playback device. The sliding cover matches with the slot. The sliding cover has a support structure to support the multimedia playback device. The positioning device is used to fix the sliding cover at a specific position. The identification device is used to identify the type of the multimedia playback device. When the multimedia playback device is accommodated in the slot, the sliding cover fixes in a specific position to match and support the multimedia playback device.

Abstract: A suction device includes a suction cup, a vertical bar connected with the suction cup, a first support cap having an opening that the vertical bar can be placed through and a first pair of gaps in the rim of the first support cap, a sleeve connected with the first support cap for containing the vertical bar, a linkage unit combined with the sleeve and the vertical bar, for controlling the vertical bar to move in the sleeve to pull the suction cup, to enable the suction functionality, and a second support cap between the suction cup and the first support cap, combined with the first support cap through relative rotation and having a second pair of gaps in the rim of the second support cap. The suction device can firmly attach to a curved surface when the second pair of gaps is under the first pair of gaps.

Abstract: A transmission plug for a complex earphone is disclosed. The complex earphone is capable of receiving a broadcast signal and sending out an audio signal. The transmission plug includes a first metal ring for providing an audio grounding, a first insulation layer formed inside the first metal ring, a second metal ring formed inside the first insulation layer for transmitting the audio signal, a second insulation layer formed inside the second metal ring, and a radio-frequency transmission stick formed inside the second insulation layer for transmitting the broadcast signal, wherein a shape of the transmission plug conforms to an international standard audio plug.

Abstract: The invention relates to a flat antenna structure. The flat antenna structure includes a first metal plate, an intermediate layer, a metal ring, and a second metal plate. The intermediate layer has a first hole, and the intermediate layer is installed above and connected to the first metal plate. The metal ring is connected to the first metal plate through the first hole. The second metal plate has a second hole. The second metal plate is connected to the metal ring and the first metal plate. The intermediate layer and the metal ring are wrapped by the first metal plate and the second metal plate. The second metal plate can be electrically connected to the first metal plate via the metal ring, and a resonator is formed between the first metal plate and the second metal plate. A characteristic of the flat antenna can be adjusted by changing the diameters of the first hole and the metal ring.

Abstract: A patch antenna includes: a dielectric layer made of an insulation material, and having upper and lower surfaces, and a through hole; a radiation metal layer disposed on the upper surface of the dielectric layer, and having a first plate body, a first aperture aligned with the through hole, and a first protruding portion extending from a peripheral edge of the first aperture into the through hole; and a grounding metal layer disposed on the lower surface of the dielectric layer, and having a second plate body, a second aperture aligned with the through hole, and a second protruding portion extending from a peripheral edge of the second aperture into the through hole. The first and second protruding portions contact each other in the through hole so that the radiation and grounding metal layers are electrically connected. A method of making a patch antenna is also disclosed.

Abstract: A suction device includes a suction cup, a vertical bar connected with the suction cup, a first support cap having an opening that the vertical bar can be placed through and a first pair of gaps in the rim of the first support cap, a sleeve connected with the first support cap for containing the vertical bar, a linkage unit combined with the sleeve and the vertical bar, for controlling the vertical bar to move in the sleeve to pull the suction cup, to enable the suction functionality, and a second support cap between the suction cup and the first support cap, combined with the first support cap through relative rotation and having a second pair of gaps in the rim of the second support cap. The suction device can firmly attach to a curved surface when the second pair of gaps is under the first pair of gaps.

Abstract: Fabrication methods for nano-scale chalcopyritic powders and polymeric thin-film solar cells are presented. The fabrication method for nano-scale chalcopyritic powders includes providing a solution consisting of group IB, IIIA, VIA elements on the chemistry periodic table or combinations thereof. The solution is heated by a microwave generator. The solution is washed and filtered by a washing agent. The solution is subsequently dried, thereby acquiring nano-scale chalcopyritic powders.

Abstract: A homogeneously-structured catalyst/enzyme composite structure formed by electrophoresis deposition (EPD) method. Catalyst and enzyme are simultaneously deposited onto the electrode surface by the EPD method, so as to form a film of catalyst/enzyme composite thereon. The film of catalyst/enzyme composite includes enzyme for catalyzing the biochemical reaction, and catalyst for increasing the rate of the electrochemical reaction, which are homogeneously mixed and forms a stable and three-dimensional structure. Also, this homogeneously-structured catalyst/enzyme composite is applicable as a working electrode of the bioreceptor in a mini-biosensor.

Abstract: A suction cup structure is disclosed. The suction cup structure can be attached firmly on a surface of an object. The suction cup structure comprises a suction cup and a gel, wherein the gel has a first surface and a second surface; the first surface is connected to the suction cup, and the second surface is attached to the surface of the object.

Abstract: A transmission plug for a complex earphone is disclosed. The complex earphone is capable of receiving a broadcast signal and sending out an audio signal. The transmission plug includes a first metal ring for providing an audio grounding, a first insulation layer formed inside the first metal ring, a second metal ring formed inside the first insulation layer for transmitting the audio signal, a second insulation layer formed inside the second metal ring, and a radio-frequency transmission stick formed inside the second insulation layer for transmitting the broadcast signal, wherein a shape of the transmission plug conforms to an international standard audio plug.

Abstract: A method for fabricating an IBIIIAVIA-group amorphous compound used for thin-film solar cells is provided. A mixture solution including elements of Group IB, IIIA, VIA or combinations thereof is provided. The mixture solution is heated and filtered. IBIIIAVIA-group amorphous powders are acquired after drying the heated and filtered mixture solution.

Abstract: An electronic device capable of matching a multimedia playback device is disclosed. The electronic device comprises a slot, a connecting port, a sliding cover, a positioning device, and an identification device. The slot is used to accommodate the multimedia playback device. The connecting port is used to electrically connect the multimedia playback device. The sliding cover matches with the slot. The sliding cover has a support structure to support the multimedia playback device. The positioning device is used to fix the sliding cover at a specific position. The identification device is used to identify the type of the multimedia playback device. When the multimedia playback device is accommodated in the slot, the sliding cover fixes in a specific position to match and support the multimedia playback device.

Abstract: A roller device mountable rotatably on a spindle includes a roller body having a tubular wall with two opposite open-end portions. Each open-end portion is provided with a retaining member formed on an inner peripheral surface of the tubular wall. Two covers are inserted respectively into the open-end portions of the tubular wall, and are adapted to be sleeved rotatably around the spindle. Each cover has an annular end wall transverse to the corresponding open-end portion, a surrounding wall extending inwardly and axially from an outer periphery of the end wall and abutting against the inner peripheral surface of the tubular wall, and an engaging member formed on an outer peripheral surface of the surrounding wall and interlocking the retaining member. The retaining and engaging members have recess-and-protrusion interlocking surfaces.

Abstract: The invention relates to a flat antenna structure. The flat antenna structure includes a first metal plate, an intermediate layer, a metal ring, and a second metal plate. The intermediate layer has a first hole, and the intermediate layer is installed above and connected to the first metal plate. The metal ring is connected to the first metal plate through the first hole. The second metal plate has a second hole. The second metal plate is connected to the metal ring and the first metal plate. The intermediate layer and the metal ring are wrapped by the first metal plate and the second metal plate. The second metal plate can be electrically connected to the first metal plate via the metal ring, and a resonator is formed between the first metal plate and the second metal plate. A characteristic of the flat antenna can be adjusted by changing the diameters of the first hole and the metal ring.

Abstract: A suction cup structure is disclosed. The suction cup structure can be attached firmly on a surface of an object. The suction cup structure comprises a suction cup and a gel, wherein the gel has a first surface and a second surface; the first surface is connected to the suction cup, and the second surface is attached to the surface of the object.

Abstract: Fabrication methods for nano-scale chalcopyritic powders and polymeric thin-film solar cells are presented. The fabrication method for nano-scale chalcopyritic powders includes providing a solution consisting of group IB, IIIA, VIA elements on the chemistry periodic table or combinations thereof. The solution is heated by a microwave generator. The solution is washed and filtered by a washing agent. The solution is subsequently dried, thereby acquiring nano-scale chalcopyritic powders.

Abstract: A housing structure of a hand-held electronic device is provided, including a first frame, a second frame connected to the first frame, and a transparent window. The first frame forms a slot and a flexible cantilever on a surface thereof, wherein the slot and the flexible cantilever are adjacent to each other, and the flexible cantilever is integrally formed with the first frame. The transparent window is also disposed on the surface and integrally formed with the first frame.

Abstract: A weather-resistant roller device for a conveyer includes a roller body which has two axially opposite end walls respectively having indented wall regions each confining a receiving groove, a spindle supporting the roller body and having two engaging parts each projecting out of a respective end wall, bearing assemblies sleeved on the spindle, two anti-leak assemblies each provided in a respective receiving groove, and two protective caps each covering a respective engaging part. Each anti-leak assembly has an outer fixed seal member disposed annularly around the spindle and extending from the spindle to a respective indented wall region. Each protective cap has an inner skirt abutting sealingly against the outer fixed seal member of a respective anti-leak assembly, and a hollow neck extending outwardly from the inner skirt and receiving fittingly a respective engaging part.

Abstract: A roller device mountable rotatably on a spindle includes a roller body having a tubular wall with two opposite open-end portions. Each open-end portion is provided with a retaining member formed on an inner peripheral surface of the tubular wall. Two covers are inserted respectively into the open-end portions of the tubular wall, and are adapted to be sleeved rotatably around the spindle. Each cover has an annular end wall transverse to the corresponding open-end portion, a surrounding wall extending inwardly and axially from an outer periphery of the end wall and abutting against the inner peripheral surface of the tubular wall, and an engaging member formed on an outer peripheral surface of the surrounding wall and interlocking the retaining member. The retaining and engaging members have recess-and-protrusion interlocking surfaces.