Novatek Microelectronics Corp.

Wen-Ping Chou

Feng-Jung Kuo

Kuei-Chung Chang

Jiun-Ting Chen

Shih-Pin Hsu

Chen-Jung Chuang

Cheng-Chung Huang

Jen-Hao Hsueh

Yi-Pin Huang

A charge pump circuit includes an input end, a first reservoir capacitor, a second reservoir capacitor, a first output end, a second output end, and a charge pump unit. The input end is utilized for receiving an input voltage. The charge pump unit includes a first flying capacitor, a second capacitor, a plurality of switches, and a control unit. The control unit is utilized for controlling on/off state of the plurality of switches so that the first flying capacitor provides a positive charge pump voltage to the first output end or a negative charge pump voltage to the second output and the second flying capacitor provides a positive charge pump voltage to the first output end through charge and discharge process.

Charge pump circuit

A driving signal generating device for staggering transition time of driving signals to prevent image crosstalk for a display device includes a receiving terminal, a first adjusting unit, a multiplexer, a second adjusting unit and a frame output controller. The receiving terminal receives a plurality of step grayscale waveforms. The first adjusting unit transforms the plurality of step grayscale waveforms into a plurality of initial grayscale waveforms and further adjusts widths of the plurality of initial grayscale waveforms according to a first predetermined value to generate a plurality of grayscale waveforms. The multiplexer selects a first grayscale waveform from the plurality of grayscale waveforms. The second adjusting unit then adjusts a width of the first grayscale waveform according to a second predetermined value to generate a second grayscale waveform. The frame output controller controls output of the first grayscale waveform and the second grayscale waveform.

Driving signal generating device and related method for display device

This present invention relates to a voltage converting apparatus with auto-adjusting boost-multiple, which includes a microprocessor unit, a boost multiple control unit, a boost unit, and a voltage converting unit. According to the digital signal, the microprocessor unit generates an output voltage information and a converting multiple information. According to the output voltage information, the boost multiple control unit computes the corresponding relation between an output voltage and an input voltage in order to generate the boost multiple information. Based on the boost multiple information, the boost unit can amplify the output voltage to generate an converting operation voltage. The voltage converting unit operates between the converting operation voltage and a fist voltage, and converts a reference voltage into the output voltage according to the converting multiple information.

Voltage converting apparatus with auto-adjusting boost multiple

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Hsinchu, Taiwan

Wen-Ping Chou