Gate driving circuit and electroluminescent display device using the same
AssigneeLG Display Co., Ltd.
InventorDong-Hyun KIM
Life of this patent
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Abstract
A gate driving circuit includes a plurality of stages that are dependently connected, wherein an n-th one of the stages (n being a natural number) comprises a node controller for controlling voltages of set and reset nodes, a scan signal generator controlled in accordance with the voltages of the set and reset nodes, thereby outputting a scan signal to a scan line of a display panel, and a reference voltage/high-level supply power output unit controlled in accordance with the voltages of the set and reset nodes, thereby outputting a reference voltage or a high-level supply voltage to a reference voltage line of the display panel.
Claims18
A gate driving circuit comprising:
- a plurality of stages that are dependently connected,
- wherein an n-th stages (n being a natural number) of the plurality of stages, comprises:
- a node controller for controlling voltages of set and reset nodes,
- a scan signal generator controlled in accordance with the voltages of the set and reset nodes, and outputting a scan signal to a scan line of a display panel, and
- a reference voltage/high-level supply power output unit controlled in accordance with the voltages of the set and reset nodes, and outputting a reference voltage or a high-level supply voltage to a reference voltage line of the display panel.
An electroluminescent display device comprising:
- a display panel at which a plurality of pixels are disposed to display an image;
- a timing controller for generating image data rearranged in conformity with a resolution of digital video data input from outside thereof, a data control signal and a gate control signal;
- a data driving circuit for converting the image data input from the timing controller into an analog data voltage based on the data control signal, and supplying the analog data voltage to data lines of the display panel;
- and
- a gate driving circuit for outputting scan signals, emission control signals, and reference voltages or high-level supply voltages to corresponding ones of scan lines, emission control lines, and reference voltage lines of the display panel, respectively.
An n-th stage (n being a natural number) of a gate driving circuit, comprising:
- a node controller for controlling voltages of set and reset nodes;
- a scan signal generator controlled in accordance with the voltages of the set and reset nodes, and outputting a scan signal to a scan line of a display panel;
- a reference voltage/high-level supply power output unit controlled in accordance with the voltages of the set and reset nodes, and outputting a reference voltage or a high-level supply voltage to a reference voltage line of the display panel;
- and
- an emission control signal generator for outputting an emission control signal to an emission control line of the display panel.
Dependencies are inferred from the claim text.