Systems for displaying images

1. A system for displaying images, comprising:

a reference voltage source outputting a voltage signal, wherein the magnitude of the voltage signal is 1/N of a driving voltage;

a digital-to-analog converter converting the voltage signal to a first voltage;

a multiplier receiving and multiplying the first voltage by N to output the driving voltage; and

a buffer receiving the driving voltage to drive a data line, wherein the multiplier further comprises:

a first capacitor comprising a first terminal and a second terminal;

a first switch comprising a first input terminal receiving the first voltage, a first output terminal coupled to the first terminal of the first capacitor, and a first control terminal controlled by a first control signal;

a second switch comprising a second input terminal receiving the first voltage, a second output terminal coupled to the second terminal of the first capacitor, and a second control terminal controlled by a second control signal;

a third switch comprising a third input terminal coupled to the second output terminal, a third output terminal grounded, and a third control terminal controlled by the first control signal;

a fourth switch comprising a fourth input terminal, a fourth output terminal coupled to the third input terminal, and a fourth control terminal controlled by a third control signal; and

a voltage-doubling circuit comprising an input terminal receiving the first voltage and an output terminal coupled to the fourth input terminal and outputting a second voltage, wherein when the fourth switch is turned on, the multiplier output a sum of the first voltage and the second voltage.

2. The system as claimed in claim 1 , wherein the voltage-doubling circuit comprises:

a second capacitor comprising a first terminal and a second terminal;

a fifth switch comprising a fifth input terminal receiving the first voltage, a fifth output terminal coupled to the first terminal of the second capacitor, and a fifth control terminal controlled by the first control signal;

a sixth switch comprising a sixth input terminal receiving the first voltage, a sixth output terminal coupled to the second terminal of the second capacitor, and a six control terminal controlled by a fourth control signal; and

a seventh switch comprising a seventh input terminal coupled to the sixth output terminal, a seventh output terminal grounded, and a seventh control terminal controlled by the first control signal.

3. A system for displaying images, comprising:

a pixel;

a data driving unit receiving and outputting a display data, wherein the magnitude of the display data is 1/N of a driving voltage;

a multiplier receiving and multiplying the display data by N; and

a buffer to receive the driving voltage to drive the pixel, wherein the display data comprises a first display data, a second display data and a third display data, and the data driving unit further comprises:

a first buffer;

a second buffer; and

a multiplexer, controlled by a first control signal, receiving the first display data, the second display data and the third display data, outputting the first display data to the first buffer and outputting the second display data and the third display data to the second buffer based on the first control signal.

4. The system as claimed in claim 3 , wherein the data driving unit further comprises a digital-to-analog converter to receive and convert the display data to a first voltage signal.

5. The system as claimed in claim 3 , wherein the display data further comprises gamma correction data.

6. The system as claimed in claim 3 , wherein the multiplier further comprises:

a first capacitor comprising a first terminal and a second terminal

a first switch comprising a first input terminal, a first output terminal, and a first control terminal, wherein the first input terminal receives the first voltage, the first control terminal is controlled by a first control signal and the first output terminal is coupled to the first terminal of the first capacitor;

a second switch comprising a second input terminal, a second output terminal, and a second control terminal, wherein the second input terminal receives the first voltage, the second control terminal is controlled by a second control signal and the second output terminal is coupled to the second terminal of the first capacitor; and

a third switch comprising a third input terminal, a third output terminal, and a third control terminal, wherein the third input terminal is coupled to the second output terminal, the third control terminal is controlled by the first control signal and the third output terminal is grounded.

7. The system as claimed in claim 3 , wherein the multiplier further comprises:

an operational amplifier comprising a positive input terminal, a negative input terminal and an output terminal, wherein the positive input terminal receives the first voltage;

a first resistor comprising a first terminal coupled to the negative input terminal and a grounded second terminal; and

a second resistor comprising a first terminal coupled to the negative input terminal and a second terminal coupled to the output terminal of the operational amplifier.

8. The system as claimed in claim 3 , wherein the multiplier comprises a first multiplier coupled to the first buffer, and a second multiplier coupled to the second buffer.

9. The system as claimed in claim 3 , wherein the second display data and the third display data are transmitted to the second buffer according to a time division multiplexing mechanism.

10. The system as claimed in claim 8 , wherein the pixel comprises a first sub-pixel coupled to the first multiplier, a second sub-pixel and a third sub-pixel coupled to the second multiplier.

11. A system for displaying images, comprising:

a display panel, comprising:

a gate driving circuit outputting a plurality of gate driving signals;

a data driving circuit receiving an image data and outputting a plurality of data driving signals, wherein the magnitude of the data driving signals is 1/N of a driving voltage;

a multiplier receiving and multiplying the data driving signals by N; and

a pixel array controlled by the gate driving signals and the data driving signals to display a corresponding image, wherein the multiplier further comprises:

a first capacitor comprising a first terminal and a second terminal;

a first switch comprising a first input terminal receiving the first voltage, a first output terminal coupled to the first terminal of the first capacitor, and a first control terminal controlled by a first control signal;

a second switch comprising a second input terminal receiving the first voltage, a second output terminal coupled to the second terminal of the first capacitor, and a second control terminal controlled by a second control signal;

a third switch comprising a third input terminal coupled to the second output terminal, a third output terminal grounded, and a third control terminal controlled by the first control signal;

a fourth switch comprising a fourth input terminal, a fourth output terminal coupled to the third input terminal, and a fourth control terminal controlled by a third control signal; and

a voltage-doubling circuit comprising an input terminal receiving the first voltage and an output terminal coupled to the fourth input terminal and outputting a second voltage, wherein when the fourth switch is turned on, the multiplier output a sum of the first voltage and the second voltage.

12. The system as claimed in claim 11 , further comprising an electronic device, wherein the electronic device comprises:

the claimed display panel; and

an input device to control the display panel to display the corresponding image.