Pixel driver
AssigneeAu Optronics Corporation
InventorsHua-Gang CHANG, Li-Wei LIU
Life of this patent
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Abstract
A pixel driver includes an input unit, a power-switching unit, a voltage-dividing unit, a pixel-driving unit and a shorting unit. The input unit outputs a data voltage according to a first scan signal and a data signal. The power-switching unit outputs a first power voltage according to a first power voltage and a power-controlling signal. The voltage-dividing unit adjusts a control voltage according to a second scan signal. The pixel-driving unit includes a control terminal, a first terminal and a second terminal. The pixel-driving unit provides a driving current to an LED according to the voltage difference between the control terminal and the second terminal. The shorting unit connects the control terminal to the first terminal according to the first scan signal.
Claims20
A pixel driver, applicable for driving a light-emitting diode (LED), the pixel driver comprising:
- an input unit configured for outputting a data voltage according to a first scan signal and a data signal;
- a power-switching unit configured for outputting the first power voltage according to a first power voltage and a power-controlling signal;
- a voltage-dividing unit configured for adjusting a control voltage according to a second scan signal;
- a pixel-driving unit comprising:
- a first terminal;
- a second terminal;
- and
- a control terminal configured for receiving the control voltage, the pixel-driving unit being configured for providing a driving current to the LED according to a voltage difference between the control terminal and the second terminal;
- and
- a shorting unit configured for connecting the control terminal and the first terminal according to the first scan signal.
Dependencies are inferred from the claim text.