摘要:
An in-ear earphone with a capacitive sensing function is provided. The earphone includes a case, a speaker, a circuit board, and a capacitive sensing unit. The case has an extension tube and an accommodating portion. An ear tip is sleeved on the extension tube. The accommodating portion accommodates the speaker, the circuit board, and the capacitive sensing unit. A sound emitting surface of the speaker faces the extension tube. The circuit board is electrically connected to the speaker, and a sensing chip is disposed on the circuit board. The capacitive sensing unit includes a sensor and a conducting element. The sensor is electrically connected to the sensing chip through the conducting element. When the extension tube is inserted into an ear canal of a user, the sensor returns a sensing signal to the sensing chip, and the sensing chip sends a control signal to control sound output of the speaker.
摘要:
A tuning fork quartz crystal resonator has a base and two resonating arms extended in parallel from the same side of the base. Each resonating arm has asymmetric grooves on its upper and bottom surface, and the via-hole to reliably connect the top and bottom electrode. The asymmetric groove design can simplify the manufacturing process and lower the manufacturing cost. The base has continuous concave on both side surfaces and a recess on the main surface. The energy of ultrasonic wave propagating via the base mounting pads into the ceramic package can be reduced. This unique tuning fork quartz crystal resonator can prevent dramatic reduction of the Q value, and retain the outstanding quality of the resonator.
摘要:
A substrate-free light emitting diode (LED) including an epitaxy layer, a conductive supporting layer, and a first contact pad is provided. The epitaxy layer includes a first type doped semiconductor layer, a light emitting layer, and a second type doped semiconductor layer. The light emitting layer is disposed on the first type doped semiconductor layer, and a portion of the first type doped semiconductor layer is exposed. The second type doped semiconductor layer and the conductive supporting layer are sequentially disposed on the second type doped semiconductor layer. The first contact pad is disposed on the exposed first type doped semiconductor layer and electrically connected thereto. The first contact pad and the conductive supporting layer serving as an electrode are disposed on the same side of the epitaxy layer to avoid the light shielding effects of the electrode to improve the front light emitting efficiency of the LED.
摘要:
A frequency synchronization device for a large LCD having a plurality of lamps as a background light source is disclosed. The device comprises a power amplification unit wherein one power amplification unit is electrically coupled to another amplification unit, each power amplification unit being electrically coupled to one or more of the lamps, adapted to generate a driving signal, and adapted to send the driving signal to the coupled lamp(s) for causing the lamps to operate at the same frequency; a plurality of current sampling elements each electrically coupled to one or more of the lamps for sampling current thereof; and control means comprising a control element and a diode, the control means being electrically coupled to current sampling elements so as to stabilize the current of the lamps. The connection and circuitry of the device are much simplified and improved.
摘要:
A bendable LED planar light source structure, a flexible substrate therefore, and a manufacturing method thereof are provided. The flexible substrate has metal layers on both sides, where the metal layer on one side has a circuit layout, and the metal layer on the other side has a pattern structure or a whole metal coating with reflecting and scattering characteristics. Meanwhile, bonding pads are provided on the same side or opposite side as the metal layer with the circuit layout, and an array of LED dies is bonded with the bonding pads through wire bonding or flip chip bonding, such that the LED dies are conducted with current through the circuit layout on the flexible substrate, so as to form a planar light source.
摘要:
A substrate-free light emitting diode (LED) including an epitaxy layer, a conductive supporting layer, and a first contact pad is provided. The epitaxy layer includes a first type doped semiconductor layer, a light emitting layer, and a second type doped semiconductor layer. The light emitting layer is disposed on the first type doped semiconductor layer, and a portion of the first type doped semiconductor layer is exposed. The second type doped semiconductor layer and the conductive supporting layer are sequentially disposed on the second type doped semiconductor layer. The first contact pad is disposed on the exposed first type doped semiconductor layer and electrically connected thereto. The first contact pad and the conductive supporting layer serving as an electrode are disposed on the same side of the epitaxy layer to avoid the light shielding effects of the electrode to improve the front light emitting efficiency of the LED.
摘要:
Disclosed is a lighting device with flipped side-structure of LEDs, which allows emitted lights to travel in parallel with the mounting surface. Single or plural LED chips are mounted on a substrate with their side surfaces facing the substrate surface. The lighting device can be further combined with optical protrusions on the substrate to form a light module for reflecting and mixing lights emitted from the LED chips. It does not require a conventional wire bonding process. The packaging structure also resolves the heat dissipation problem of the LEDs. Electrostatic discharge protection circuits can be included in the light module if desired. The invention achieves good uniformity and high intensity of the combined lights with desired chromaticity.
摘要:
A coupling structure between a fiber and an optical waveguide to couple the optical waveguide to the fiber is disclosed. A substrate includes an optical waveguide region and at least one aligning groove for containing the fiber. The optical waveguide region has optical circuits and input/output surfaces of the optical circuits. The input/output surfaces face the aligning groove. A non-perpendicular angle is formed between input/output surfaces and the progressing direction of the incident light.
摘要:
An optical splitter with reflection suppression is disclosed. It includes an input waveguide and a plurality of receiving waveguides. The input waveguide has at least one output surface for transferring an incident light to the receiving surfaces of the receiving waveguides. Each of the output surfaces parallels the corresponding receiving surfaces, and an oblique angle is formed between the output surface and the progressing direction of the incident light.
摘要:
An optical sub-assembly (OSA) module for suppressing optical back-reflection and effectively guiding light from a light source to an optical waveguide is disclosed. The module comprises a light source for emitting light to said optical waveguide and at least one light transmitting element installed between said light source and said optical waveguide. The at least one light transmitting element is arranged to have a configuration for avoiding light to reflect back to the light source and to cause a light beam from said light source to point to said core of said optical waveguide. Thereby, the working distance is increased, and the assembling process of the OSA module is simplified. This new optical design scheme will greatly improve the optical characteristics of an OSA module, increase the optical transceiver propagation distance, and reduce the difficulty of OSA assembly process.