7 results about "High power leds" patented technology

A high power LED array driven at greater than about 6 V for vehicular applications and a method of manufacturing the LED array are described. A mirror is disposed on the n-semiconductor layer and the p-semiconductor layer. A dielectric spacer is disposed between the p-semiconductor and the mirror. A hard mask is deposited on the dielectric spacer and has an opening with a conductor to the mirror. A dielectric layer is deposited on the hard mask. A bonding layer formed on the dielectric layer is connected to the semiconductor. Trenches extend through the semiconductor to form pixels connected in series. A dielectric spacer layer stack is disposed on sidewalls of the trench to form a Bragg reflector. A redistribution dielectric (RDL) layer is disposed on the bonding layer. An under bump metallization (UBM) pad deposited on the RDL layer is coupled to the bonding layers of the first and last pixels via an opening in the RDL layer.

The present invention relates to a high-power LED substrate architecture, including an aluminum nitride ceramic substrate for fixing an LED chip, and also including a lower substrate fixed under the aluminum nitride ceramic substrate, and the aluminum nitride ceramic substrate also includes a blind hole filled with a low-melting-point metal for transferring heat to the lower substrate. The present invention uses aluminum nitride ceramic as an upper substrate, and injects a low-melting-point metal into the blind hole on the aluminum nitride ceramic substrate, adopts a large-area double-sided copper-clad plate as a lower substrate, and arranges a low-melting-point metal layer between the double-layer substrates, and at the same time, a heat-conducting copper column is provided at the position of the lower substrate corresponding to the chip. The present invention isolates the heat conduction channel and the electrical conduction channel, and uses a high thermal conductivity material to open a maximum heat sink channel for the heat dissipation of the LED chip, and the thermal conductivity coefficient is maintained at about 200W / m·K, thereby avoiding the brightness attenuation of the LED chip due to temperature rise and improving the working efficiency of the chip.

A Light-Emitting Diode (LED) light system has a plurality of LED groups connected in parallel with each of the plurality of LED groups having one or more LEDs connected in series, a power circuit having a plurality of outputs with each output of the power circuit is electrically coupled to a respective one of the plurality of LED groups, and a control subsystem electrically coupled to the power circuit for individually controlling each output of the power circuit for controlling the operation of the corresponding LED group and adapting to the characteristics thereof. In some embodiments, at least one LED group may further have a switch and / or a light-angle controlling structure connected with the one or more LEDs in series and controlled by the control subsystem for selectively enabling or disabling the LED group and / or adjusting the light angle thereof.

A patient monitoring sensor having a communication interface, through which the patient monitoring sensor can communicate with a monitor is provided. The patient monitoring sensor includes a light-emitting diode (LED) communicatively coupled to the communication interface and a detector, communicatively coupled to the communication interface, capable of detecting light. The patient monitoring sensor includes a layer of material is provided over the LED on the patient-side of the sensor to reduce transmission of heat therefrom to the skin of the patient.

This application discloses a multi-color decorative light control device and a vehicle. The multi-color decorative light control device includes an input filter circuit, an input protection circuit, a first colored light, a second colored light, and a third colored light. The input filter circuit is electrically connected to the power supply terminal of the vehicle control module, and the input protection circuit is electrically connected to the input filter circuit. The positive terminals of the first, second, and third colored lights are respectively electrically connected to the input protection circuit. The negative terminal of the first colored light is electrically connected to the first control terminal of the vehicle control module, the negative terminal of the second colored light is electrically connected to the second control terminal of the vehicle control module, and the negative terminal of the third colored light is electrically connected to the third control terminal of the vehicle control module. The applied multi-color decorative light control device has a simple and reliable circuit and can use higher power LEDs to improve brightness, thus enabling easy identification even in daytime environments.

The utility model discloses a low thermal resistance high luminous efficiency high power LED lamp bead, which comprises an outer packaging seat, a lens, a ceramic base, a pin, an LED chip and a heat conducting plate, the lens is arranged on the outer packaging seat, the ceramic base is arranged in the outer packaging seat, the bottom of the ceramic base is provided with a plurality of grooves, and the pins are arranged in the grooves. The bottom of the ceramic base is coated with heat-conducting double-faced adhesive tape, the pins are arranged on the ceramic base, the LED chips are arranged in the ceramic base, the heat-conducting plate is arranged in the ceramic base, and a plurality of heat-conducting fins are arranged at the bottom of the heat-conducting plate. The ceramic base and the heat conducting plate are arranged, under the condition that use of the LED lamp beads is not affected, the rapid heat conducting effect is achieved, the heat dissipation effect is good, the use range is large, and meanwhile the heat dissipation effect is improved and fixation is convenient through the heat conducting double-faced adhesive tape.

A patient monitoring sensor having a communication interface, through which the patient monitoring sensor can communicate with a monitor is provided. The patient monitoring sensor includes a light-emitting diode (LED) communicatively coupled to the communication interface and a detector, communicatively coupled to the communication interface, capable of detecting light. The patient monitoring sensor includes a layer of material is provided over the LED on the patient-side of the sensor to reduce transmission of heat therefrom to the skin of the patient.