Patent ID: 8674973
Filing Date: 2014-03-18
Classification: G09G

Abstract:
1. A liquid crystal display device, comprising: a pixel array including a plurality of pixels arranged in matrix, the plurality of pixels forming pixel rows and pixel columns; a data driver circuit for supplying gray scale voltages in accordance with display data to the plurality of pixels; a short circuit disposed for respective outputs of the data driver circuit, the short circuit including switching elements for connecting each of the outputs to a precharge voltage different from an output voltage; and a scanning circuit for supplying a scanning signal for selecting, from among the plurality of pixels, pixels in a line unit of each of the pixel rows, the liquid crystal display device employing a dot inversion drive method which inverts polarities of the gray scale voltages for at least every 2 pixel rows, wherein: the short circuit includes the switching elements each disposed in one of a first switching group and a second switching group; each switching element of one of the first switching group and the second switching group is connected to respective pairs of pixel column units including an odd-numbered pixel column and an even-numbered pixel column which are adjacent to each other; the pairs of pixel column units which are adjacent to each other are each connected to one of the switching elements disposed in respective switching groups different from each other, and the first switching group includes a first ground short-circuit switch, a second ground short-circuit switch, a first VCC short-circuit switch, a second VCC short-circuit switch, a first −VCC short-circuit switch and a second −VCC short-circuit switch, the second switching group includes a third ground short-circuit switch, a fourth ground short-circuit switch, a third VCC short-circuit switch, a fourth VCC short-circuit switch, a third −VCC short-circuit switch and a fourth −VCC short-circuit switch, a first VCC short-circuit signal is connected to a gate of the first VCC short-circuit switch and a gate of the second −VCC short-circuit switch, a second VCC short-circuit signal is connected to a gate of the second VCC short-circuit switch and a gate of the first −VCC short-circuit switch, a third VCC short-circuit signal is connected to a gate of the third VCC short-circuit switch and a gate of the fourth −VCC short-circuit switch, and a fourth VCC short-circuit signal is connected to a gate of the fourth −VCC short-circuit and a gate of the third −VCC short-circuit.