公开(公告)号：US20150049008A1

公开(公告)日：2015-02-19

申请号：US14045966

申请日：2013-10-04

Applicant: SITRONIX TECHNOLOGY CORP.

Inventor： KAI-YI WU ,  KUAN-CHAO LIAO ,  HUNG-YU LU

IPC: G09G3/36

CPC classification number: G09G3/3696 ,  G09G3/3648 ,  G09G2330/02 ,  H02M1/36 ,  H02M3/07 ,  H02M2001/0006

Abstract: The present invention relates to a power circuit of displaying device, which comprises a timing controller, a control circuit, and a charge pump (single or multiple stages). The timing controller outputs a timing control signal to the control circuit. The control circuit outputs a clock signal or a capacitance adjusting signal according to the timing control signal. The charge pump receives the input voltage and outputs an output voltage according to the clock signal or the capacitance adjusting signal. The output voltage is provided to the scan driver for generating a plurality of scan driving signals. Accordingly, by increasing the rise rate of the output voltage of the charge pump in the voltage conversion time and reducing the rise rate of the output voltage close to the voltage holding time, the present invention can achieve the effect of reducing the power consumption.

Abstract translation: 本发明涉及显示装置的电源电路，其包括定时控制器，控制电路和电荷泵（单级或多级）。 定时控制器向控制电路输出定时控制信号。 控制电路根据定时控制信号输出时钟信号或电容调整信号。 电荷泵接收输入电压，并根据时钟信号或电容调整信号输出输出电压。 输出电压被提供给扫描驱动器以产生多个扫描驱动信号。 因此，通过在电压转换时间内增加电荷泵的输出电压的上升率，并将输出电压的上升率降低到接近电压保持时间的方式，本发明可以实现降低功耗的效果。

公开(公告)号：US20150048743A1

公开(公告)日：2015-02-19

申请号：US14047148

申请日：2013-10-07

Applicant: SITRONIX TECHNOLOGY CORP.

Inventor： KUAN-CHAO LIAO ,  KAI-YI WU

IPC: H02M3/04 ,  G09G3/36

CPC classification number: G09G3/36 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2330/02 ,  H02M3/07 ,  H02M2003/1566

Abstract: The present invention discloses a power circuit having multiple stages of charge pumps. The power circuit comprises a first charge pump, a second charge pump, a voltage stabilizing capacitor, and an output capacitor. The first charge pump adjusts an input voltage and produces a first output voltage. The second charge pump adjusts the first output voltage, produces a second output voltage, and outputs the second output voltage for driving a loading. The voltage stabilizing capacitor is coupled between the first and second charge pumps and connected externally to the output of the first charge pump. The output capacitor is coupled to the second charge pump for providing the second output voltage. According to the present invention, the effect of supplying large transient currents to the loading can be achieved by connecting externally the voltage stabilizing capacitor to the output of the first charge pump.

Abstract translation: 本发明公开了一种具有多级电荷泵的电源电路。 电源电路包括第一电荷泵，第二电荷泵，稳压电容器和输出电容器。 第一个电荷泵调节输入电压并产生第一个输出电压。 第二电荷泵调节第一输出电压，产生第二输出电压，并输出用于驱动负载的第二输出电压。 电压稳定电容器耦合在第一和第二电荷泵之间并且在外部连接到第一电荷泵的输出端。 输出电容器耦合到第二电荷泵以提供第二输出电压。 根据本发明，通过将稳压电容器外部连接到第一电荷泵的输出，可以实现向负载提供大的瞬态电流的效果。