Abstract:
A light-emitting device includes a plurality of light-emitting units, a plurality of non-address-embedded brightness control integrated circuits (ICs) and at least one system control unit. Each of the brightness control ICs is electrically connected to each of the light-emitting units. The system control unit addresses each of the brightness control ICs by outputting at least one addressing signal through an external circuit, and writes a brightness control signal to each of the brightness control ICs. Each brightness control IC controls each of the light-emitting units according to the received brightness control signal.
Abstract:
A light emitting apparatus receives an external power and includes a light-emitting unit, two rectifiers, a first electrical connection element and a second electrical connection element. Each of the rectifiers has a first input terminal, a second input terminal, an output terminal and a ground terminal. The output terminals are electrically connected together and are electrically connected with the light-emitting unit. The first electrical connection element is electrically connected with the external power and the first input terminals. The second electrical connection element is electrically connected with the external power and the second input terminals. The light emitting apparatus can replace the traditional fluorescent tube without changing the circuit of the lighting.
Abstract:
A light-emitting device, electrically connected to an external variable voltage source, includes a plurality of light-emitting modules sequentially electrically connected in series and electrically connected to the external variable voltage source. Each light-emitting module has at least one light-emitting unit, a first connection terminal and a second connection terminal. At least one of the light-emitting modules has a control unit and a bypass unit electrically connected to the light-emitting unit. The second connection terminal of the light-emitting module having the bypass unit and the control unit is electrically connected to the first connection terminal of the other light-emitting module and serves as a detection terminal. The control unit detects a voltage of the detection terminal and accordingly controls the bypass unit to adjust a current flowing through the light-emitting unit.
Abstract:
An electronic package device has an accommodation space being substantially sealed. The electronic package device includes a fluid, an electronic element and a space buffer mechanism. The fluid is located in the accommodation space. The electronic element is also disposed in the accommodation space, and at least a part thereof contacts with the fluid. The space buffer mechanism at least partially contacts with the fluid and provides the displacement or deformation to buffer the volume variation of the fluid.
Abstract:
A light-emitting apparatus is electrically connected to a power supply unit. The light-emitting apparatus includes at least one first light-emitting module and a second light-emitting module. The first light-emitting module includes a first light-emitting unit and a first driving circuit, which are electrically connected to each other. The second light-emitting module is electrically connected to the first light-emitting module, and includes a second light-emitting unit and a second driving circuit, which are electrically connected to each other. The first driving circuit adjusts a current passing through the first light-emitting unit in accordance with a first parameter representing the operating state of the second light-emitting module. The second driving circuit adjusts a bypass current bypassing the second light-emitting unit in accordance with a second parameter representing the lighting state of the light-emitting apparatus.
Abstract:
A light emitting device includes at least one light emitting unit, a switching unit, a comparator unit, a charge storage unit and a sensing unit. The switching unit is electrically connected to the light emitting unit. The comparator unit is electrically connected to the switching unit. The charge storage unit is electrically connected to the comparator unit and stores an amount of electric charges. The sensing unit has a light sensing circuit and is electrically connected to the charge storage unit. The light sensing circuit senses a light intensity of the light emitting unit. The sensing unit adjusts the amount of the electric charges and a voltage corresponding to the amount of the electric charges according to the light intensity. The comparator unit compares the voltage with a threshold voltage. The switching unit controls the light emitting unit in accordance with the result of the comparison.
Abstract:
A light emitting device includes at least one light emitting unit, a switching unit, a comparator unit, a charge storage unit and a sensing unit. The switching unit is electrically connected to the light emitting unit. The comparator unit is electrically connected to the switching unit. The charge storage unit is electrically connected to the comparator unit and stores an amount of electric charges. The sensing unit has a light sensing circuit and is electrically connected to the charge storage unit. The light sensing circuit senses a light intensity of the light emitting unit. The sensing unit adjusts the amount of the electric charges and a voltage corresponding to the amount of the electric charges according to the light intensity. The comparator unit compares the voltage with a threshold voltage. The switching unit controls the light emitting unit in accordance with the result of the comparison.
Abstract:
A calibrating method of a light emitting device, which includes at least one light-emitting diode (LED) unit. The calibrating method includes the steps of inputting a brightness control signal to the LED unit, measuring a lighting brightness of the LED unit, and writing an initial relation of the brightness control signal and the lighting brightness into a memory unit. In addition, a light emitting device and a controlling method thereof are also disclosed.