摘要:
A backlight module comprising a back bezel, at least one light emitting device, a first circuit board, and a second circuit board is provided. The light emitting device, which has an electrode, is disposed on the side of the back bezel, while the first circuit board is disposed on the edge of the back bezel. An elastic clip is used to electrically connect the first circuit board directly with the electrode of the light emitting device, while the second circuit board is electrically connected to the first circuit board.
摘要:
A backlight module comprising a back bezel, at least one light emitting device, a first circuit board, and a second circuit board is provided. The light emitting device, which has an electrode, is disposed on the side of the back bezel, while the first circuit board is disposed on the edge of the back bezel. An elastic clip is used to electrically connect the first circuit board directly with the electrode of the light emitting device, while the second circuit board is electrically connected to the first circuit board.
摘要:
A lamp current balance and feedback system and related method are disclosed for balancing the input and output currents of a lamp by making use of a lamp current balance and feedback mechanism. The operation of the lamp current balance and feedback mechanism includes coupling the input current of the lamp for generating a first balance current by a first transformer, coupling the output current of the lamp for generating a second balance current by a second transformer, coupling the first and second transformers for substantially equalizing the first and second balance currents, generating a feedback signal based on the first or second balance current by a feedback circuit, generating a pulse width modulation signal based on the feedback signal by a pulse width modulation signal generation circuit, and driving the input and output currents of the lamp based on the pulse width modulation signal by a driving circuit.
摘要:
A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
摘要:
A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
摘要:
A lamp current balance and feedback system and related method are disclosed for balancing the input and output currents of a lamp by making use of a lamp current balance and feedback mechanism. The operation of the lamp current balance and feedback mechanism includes coupling the input current of the lamp for generating a first balance current by a first transformer, coupling the output current of the lamp for generating a second balance current by a second transformer, coupling the first and second transformers for substantially equalizing the first and second balance currents, generating a feedback signal based on the first or second balance current by a feedback circuit, generating a pulse width modulation signal based on the feedback signal by a pulse width modulation signal generation circuit, and driving the input and output currents of the lamp based on the pulse width modulation signal by a driving circuit.
摘要:
A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
摘要:
A light driver circuit device for synchronously driving a plurality of cold cathode fluorescent lamps (CCFLs) is provided. The light driver circuit device includes an inverter circuit board and a balance circuit board. The inverter circuit board has an inverter circuit coupled to a driving signal for outputting a driving voltage to drive the CCFLs synchronously. The balance circuit board and the inverter circuit board are installed separately, and the balance circuit board has a balance circuit coupled to a terminal of each CCFL and the inverter circuit. The CCFL driving architecture is designed to install the inverter circuit and the balance circuit individually, thus effectively reducing the space of the driving circuit and the total cost of the circuit design. Furthermore, the balance circuit board can balance the current in each CCFL effectively, and there is no limitation to where the balance circuit board can be disposed.
摘要:
An active current regulator circuit. In one embodiment, the active current regulator circuit includes a first input node for receiving a first reference electrical signal, a second input node for receiving a second reference electrical signal, a ground node, and an output node for outputting an output electrical signal with respect to the ground node. The active current regulator circuit further includes a PI controller having a first input node, a second input node, and an output node, and a linear regulator having a first input node electrically coupled to the output of the PI controller for receiving a voltage signal V0 generated the PI controller, a first output node and a second output node. In operation the voltage signal V0 is responsive to at least one input voltage signal applied to the first input of the second input of the amplifier, and drives the linear regulator to have a controlled electrical signal at its first output node accordingly.
摘要:
An active current regulator circuit. In one embodiment, the active current regulator circuit includes a first input node for receiving a first reference electrical signal, a second input node for receiving a second reference electrical signal, a ground node, and an output node for outputting an output electrical signal with respect to the ground node. The active current regulator circuit further includes a PI controller having a first input node, a second input node, and an output node, and a linear regulator having a first input node electrically coupled to the output of the PI controller for receiving a voltage signal V0 generated the PI controller, a first output node and a second output node. In operation the voltage signal V0 is responsive to at least one input voltage signal applied to the first input of the second input of the amplifier, and drives the linear regulator to have a controlled electrical signal at its first output node accordingly.