Patent ID: 9076400
Filing Date: 2015-07-07
Classification: G09G

Abstract:
1. A liquid crystal display device including data signal lines, scanning signal lines, retention capacitor wires, data transfer lines, and pixel electrodes, the liquid crystal display device being a memory-type liquid crystal display device that carries out a refresh operation during a data retention period after writing of a data signal potential, the liquid crystal display device comprising: first transistors each having its control terminal connected to a corresponding one of the scanning signal lines, having one conducting terminal connected to a corresponding one of the data signal lines, and having the other conducting terminal connected to a corresponding one of the pixel electrodes; second transistors each having its control terminal connected to a corresponding one of the data transfer lines and having one conducting terminal connected to a corresponding one of the pixel electrodes; retention electrodes each connected to the other conducting terminal of a corresponding one of the second transistors; refresh output control sections each having its input section connected to a corresponding one of the retention electrodes and having its output section connected to a corresponding one of the pixel electrodes; and retention capacitors each formed between a corresponding one of the retention electrodes and a corresponding one of the retention capacitor wires, in the data retention period, an electric potential of each of the retention electrodes being changed via a corresponding one of the retention capacitors by changing an electric potential level of a retention capacitor wire signal that is supplied to a corresponding one of the retention capacitor wires, the refresh output control sections each receiving the electric potential thus changed of a corresponding one of the retention electrodes via the input section and controlling an electric potential of a corresponding one of the pixel electrodes in accordance with the electric potential thus changed.