Au Optronics Corporation

Huang-Ti Lin

Chia-Hung Sun

Tsung-Shiun Lee

Yueh-Han Li

Jia-Wei Liu

Wen-Ti Chang

Cheng-Neng Liao

Chin-Chuang Chueh

Chun-Chieh Huang

Kuo-Chih Lee

Yu-Hsiang Huang

Yuan-Pin Cho

Ching-Hung Wang

Sheng-Chieh Chen

Chia-Yuan Chang

Yen-Chen Huang

Jin-Jang Yang

Yun-Sheng Chou

Yen-Feng Lu

Bing-Shiang Hsu

A level shift circuit includes a level shift module and a voltage comparing module. The level shift module includes a plurality of stages of level shift units, each including a front-end circuit and an inverter circuit. The inverter circuit is electrically coupled to the front-end circuit and receives and inverts an output signal of the front-end circuit. The front-end circuit receives a clock signal, converts high/low voltage level of the clock signal into first/second voltage level, respectively, and outputs a respective signal with the first/second voltage level. The voltage comparing module is coupled to the level shift module and receives output signals of the inverter circuit of the first level shift unit and of the front-end circuit in the second level shift unit and compares the two output signals. The voltage comparing module outputs a short-circuit protection trigger signal when the two output signals have different voltages.

Level shift circuit with short-circuit detection mechanism and short-circuit detection method thereof

A lighting system includes a first lighting unit for generating output light according to a first current, a second lighting unit for generating output light according to a second current, a third lighting unit for generating output light according to a third current, a fourth lighting unit for generating output light according to a fourth current, a first power driving unit electrically connected to the first and third lighting units, and a second power driving unit electrically connected to the second and fourth lighting units. The second lighting unit is disposed between the first and third lighting units. The third lighting unit is disposed between the second and fourth lighting units. The first power driving unit is employed to drive the first and third currents. The second power driving unit is employed to drive the second and fourth currents.

Lighting system having interlaced driving mechanism

A backlight module is provided, which includes a first coil, a first driving circuit, a second coil, a rectifying circuit and a light emitting unit. The first driving circuit is electrically connected to the first coil for controlling the first coil to produce a first magnetic field. The second coil is disposed on a transmission direction of the first magnetic field corresponding to the first coil for receiving the first magnetic field and providing a first induction voltage according to the first magnetic field. The rectifying circuit is electrically connected to the second coil for converting the first induction voltage into a first driving voltage. The light emitting unit is electrically connected to the rectifying circuit to provide a backlight according to the first driving voltage.

Backlight module transmitting electricity through magnetic field induction

A display device with wireless power supply from power transmission means is disclosed in the disclosure. The display device comprises a display module, a system controlling module and a wireless power receiving module. The system controlling module is electrically connected to the display module. The wireless power receiving module is electrically connected to the system controlling module. The wireless power receiving module comprises a plurality of near-field coil units. The near-field coil units have individual receiving frequencies and individual output powers. The near-field coil units are configured to resonate with a transmission coil of the power transmission means. According to a transmission frequency on the transmission coil, the near-field coil unit with corresponding receiving frequency generates an electricity supply with a certain output power to the system controlling module. In addition, a wireless power transmission system is also disclosed herein.

Display device and wireless power transmission system

A wireless power transmission device includes a power transmitter, a first transmission unit, a power receiver, a feedback regulator, a receive controller, and a second transmission unit. The power transmitter is for generating power, and the first transmission unit is for wirelessly transmitting power generated by the power transmitter. The power receiver is for receiving and rectifying the power from the first transmission unit. The feedback regulator is for receiving a feedback signal from the power receiver to generate an AC control signal. The receive controller is for receiving the control signal to generate a driving signal. The second transmission unit is for wirelessly transmitting the control signal to the receive controller.

Wireless power transmission device

An exemplary current regulating circuit of LED string includes a capacitor, an inductor, a diode, a switch and a detection circuit. First and second terminals of the capacitor respectively are connected to a low voltage and a preset voltage. A first terminal of the inductor is connected to the low voltage. Positive and negative terminals of the diode are respectively connected to a second terminal of the inductor and a high voltage. First and second terminals of the switch are respectively connected to the second terminal of the inductor and the preset voltage. The detection circuit detects the low voltage to thereby switch ON-OFF states of the switch in demand. Moreover, a LED illumination device using the current regulating circuit also is provided.

Current regulating circuit of light emitting diode (LED) string and LED illumination device

A driving circuit and lighting equipment using the same are provided. The driving circuit includes a first power receiving terminal, a second power receiving terminal and a power conversion unit. The first power receiving terminal receives an alternating current (AC) input signal. The second power receiving terminal is electrically coupled to a predetermined potential. The power conversion unit is electrically coupled to the first and second power receiving terminals for transforming the AC input signal into corresponding two AC output signals of different phases, wherein the two AC output signals are with the same current.

Driving circuit and lighting equipment using the same

An exemplary wireless transmission display system includes a signal generating apparatus and at least one display apparatus. The signal generating apparatus receives a display data represented in a first data format and converts the display data to be represented in a second data format. Then, the display data represented in the second data format is transmitted to the display apparatus in wireless manner. The display apparatus receives the display data represented in the second data format and performs a display directly according to the display data represented in the second data format without converting the second data format into any other data format. Moreover, a wireless transmission displaying method is also provided.

Wireless transmission display system and wireless transmission displaying method

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.

Light driver circuit device and backlight device

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.

Backlight system having a lamp current balance and feedback mechanism and related method thereof

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.

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Hsin-Chu, Taiwan

Huang-Ti Lin