Array substrate, lcd device and driving method
AssigneeBoe Technology Group Co., Ltd.
InventorYaohu LIU
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Abstract
In an embodiments of the present invention, since two pixel electrodes are arranged in the pixel unit and each of the pixel electrodes is respectively controlled by a corresponding TFT, the rotation direction of the liquid crystal molecules may be controlled by the voltage difference between the two pixel electrodes, while the voltage on the pixel electrodes of other pixel units in the array substrate is not affected, so that the greenish phenomenon can be avoided. Furthermore, since the two TFTs for controlling the two pixel electrodes respectively may have same parasitic capacitor when the pixel unit is turned off, the voltage difference between the two pixel electrodes is kept unchanged, and thus the occurrence of the image flickering can be avoided.
Claims19
An array substrate, comprising a plurality of pixel units arranged in form of matrix, each pixel unit comprising:
- a first thin film transistor (TFT), a second TFT, a first pixel electrode and a second pixel electrode;
- wherein a drain electrode of the first TFT is electrically coupled to the first pixel electrode;
- a drain electrode of the second TFT is electrically coupled to the second pixel electrode;
- and the first pixel electrode is electrically insulated from the second pixel electrode, so that when an electric potential difference exists between the first pixel electrode and the second pixel electrode, an electric field is generated between the first pixel electrode and the second pixel electrode.
A method for driving an array substrate, wherein the array substrate comprises a plurality of pixel units arranged in form of matrix, each pixel unit comprises a first TFT, a second TFT, a first pixel electrode and a second pixel electrode;
- a drain electrode of the first TFT is electrically coupled to the first pixel electrode;
- a drain electrode of the second TFT is electrically coupled to the second pixel electrode;
- and the first pixel electrode is electrically insulated from the second pixel electrode, the method comprising:
- providing a first voltage to the first pixel electrode;
- providing a second voltage to the second pixel electrode;
- and
- generating an electric field between the first pixel electrode and the second pixel electrode, when a voltage difference exists between the first voltage and the second voltage.
Dependencies are inferred from the claim text.