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US 7,889,157 B2Granted
Electro-luminescence display device and driving apparatus thereof
AssigneeLG Display Co., Ltd.
InventorsDai Yun Lee, Han Sang Lee, Sang Soo Han
Life of this patent
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Abstract
An electro-luminescence display device includes: pixels provided between data lines and scan lines, each of the pixels including a light-emitting cell driven with a current; and a current controller for temporarily increasing the current for driving the light-emitting cells.
Claims19
An electro-luminescence display device comprising:
- pixels provided between data lines and scan lines, each of the pixels including a light-emitting cell driven with a current;
- a current controller for temporarily increasing the current for subsequent driving of the light-emitting cell;
- a data driver to apply a data signal to the current controller;
- a light-emitting cell controller to control the current applied to the light-emitting cell;
- and
- a timing controller to apply the data signal to the data driver, and generating a first selection signal, a second selection signal, a third selection signal, a third selection signal, a fourth selection signal, a fifth selection signal, a sixth selection signal, a pre-charging selection signal and a pre-charging enable signal,
- wherein the current controller includes:
- a plurality of current sample holder portions connected to the data driver and the data line, and sampling the data signal from the data driver;
- and
- a plurality of pre-charging current suppliers connected between supply voltage lines and the data lines to apply a pre-charging current to the data lines.
7 more elements
A method of driving an electro-luminescence display device having pixels at intersections between data lines and scan lines and including light-emitting cells driven with a current, the method comprising the steps of:
- sequentially sampling data signals applied to the data lines in a time interval when a scanning pulse is applied to the Nth scan line and storing them into a plurality of first sample holder portions, wherein each of the first sample holder portions is connected between one output line of a data driver and a plurality of data lines;
- and
- temporarily increasing a current flowing in the light-emitting cell largely using the data signals stored in the plurality of first sample holders in a time interval when the scanning pulse is applied to the (N+1)th scan line.
Dependencies are inferred from the claim text.