Abstract: A semiconductor device includes a substrate, a gate structure on the substrate, a source/drain (S/D) region and a contact. The S/D region is located in the substrate and on a side of the gate structure. The contact lands on and connected to the S/D region. The contact wraps around the S/D region.

Abstract: This invention discloses a color temperature controller and a color temperature control method of a light emitting diode (LED). The color temperature controller applied in an LED lamp includes touch switches and a control element. After a color of a color pattern on any touch switch is clicked and selected by a user, a signal of the color is outputted to the control element, and the control element outputs a corresponding pulse width modulation (PWM) signal to control either the current or the voltage of a three-color LED in the LED lamp, so that the LED lamp produces a same color temperature change of the signal of the color to improve the color temperature control of a conventional LED lamp, and provides a flexible color change of the LED lamp.

Abstract: A light emitting diode illuminator includes at least one light emitting diode, a power supply, an illumination control interface and a controller. The power supply is electrically connected to the at least one light emitting diode so as to provide a current to the at least one light emitting diode. The illumination control interface is configured to sense a touch time from a user so as to generate a control signal. The controller is electrically connected to the illumination control interface and the power supply so as to generate a modulation signal according to the control signal. The power supply adjusts strength of the current according to the modulation signal so that the at least one light emitting diode generates a corresponding illumination according to the strength of the current.

Abstract: This invention discloses a color temperature controller and a color temperature control method of a light emitting diode (LED). The color temperature controller applied in an LED lamp includes touch switches and a control element. After a color of a color pattern on any touch switch is clicked and selected by a user, a signal of the color is outputted to the control element, and the control element outputs a corresponding pulse width modulation (PWM) signal to control either the current or the voltage of a three-color LED in the LED lamp, so that the LED lamp produces a same color temperature change of the signal of the color to improve the color temperature control of a conventional LED lamp, and provides a flexible color change of the LED lamp.