Abstract: A method for performing a wet chemical process over a semiconductor wafer is provided. The method includes moving the semiconductor wafer into a chemical solution. The method further includes detecting the concentration of at least one substance in the chemical solution at a plurality of preset time points. The method also includes removing the semiconductor wafer from the chemical solution, when the concentration of the substance is maintained at a fixed approximate value.

Abstract: A light emitting diode comprises a light emitting diode chip and a packaging layer. The light emitting diode chip comprises a N-semiconductor layer, a light active layer, and a P-semiconductor layer arranged from a bottom to a top in that sequence, a first electrode, and a second electrode. The first electrode is formed on the P-semiconductor layer. The second electrode is formed on the N-semiconductor layer. The packaging layer covers the light emitting diode chip, and exposes the N-semiconductor layer, the first electrode, and the second electrode. The packaging layer has a through hole separated from a periphery of the light emitting diode chip. A conductive substrate fills the through hole. A first conductive layer is electrically connected to the first electrode and the conductive substrate. The disclosure also provides a method for manufacturing a light emitting diode.

Abstract: A method for performing a wet chemical process over a semiconductor wafer is provided. The method includes moving the semiconductor wafer into a chemical solution. The method further includes detecting the concentration of at least one substance in the chemical solution at a plurality of preset time points. The method also includes removing the semiconductor wafer from the chemical solution, when the concentration of the substance is maintained at a fixed approximate value.

Abstract: An illumination device power control module is capable of dynamically adjusting power consumption of a light-emitting diode (LED) illumination device by adjusting the output voltage to different levels to control the power of the light emitting diode illumination device. An alternating current power source terminal is configured to receive an alternating current voltage. A rectifier is configured to convert the alternating current voltage to a rectified voltage.

Abstract: An illumination device power control module is capable of dynamically adjusting power consumption of a light-emitting diode (LED) illumination device by adjusting the output voltage to different levels to control the power of the light emitting diode illumination device. An alternating current power source terminal is configured to receive an alternating current voltage. A rectifier is configured to convert the alternating current voltage to a rectified voltage.

Abstract: This specification provides a burst synchronization and error detection device, which can generate in the synchronization module of the burst synchronization and error detection device a syndrome shared with the error detection module so as to decrease the computation time of the syndrome, shortening the processing time of error detection. The present invention also provides a burst synchronization and error detection method.

Abstract: This specification provides a burst synchronization and error detection device, which can generate in the synchronization module of the burst synchronization and error detection device a syndrome shared with the error detection module so as to decrease the computation time of the syndrome, shortening the processing time of error detection. The present invention also provides a burst synchronization and error detection method.