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US 8,477,129 B2Granted
Systems for displaying images
AssigneeTPO Displays Corp.
InventorsFu-Yuan Hsueh, Kai-Chieh Yang
Life of this patent
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Abstract
A system for displaying images is provided. The system comprises a reference voltage source, a digital-to-analog converter, a multiplier and a buffer. The reference voltage source outputs a voltage signal, wherein the magnitude of the voltage signal is 1/N of a driving voltage. The digital-to-analog converter converts the voltage signal to a first voltage. The multiplier receives and multiplies the first voltage by N to output the driving voltage. The buffer receives the driving voltage to drive a data line.
Claims12
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.
9 more elements
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.
6 more elements
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.
10 more elements
Dependencies are inferred from the claim text.