Patent ID: 9443484
Filing Date: 2016-09-13
CPC Classification: G09G

Claim Text:
1. A liquid crystal display device, which employs pause driving to provide a pause frame for suspending a refresh of a screen between two refresh frames for performing a refresh of the screen, and performs image display by applying an AC voltage to liquid crystal based on an image signal irregularly inputted from an external portion, the liquid crystal display device comprising: a liquid crystal panel that includes a plurality of pixel electrodes arranged in a matrix form and a common electrode provided for applying a voltage between the common electrode and the plurality of pixel electrodes through the liquid crystal, and displays an image based on the image signal; a liquid crystal panel driving portion that drives the liquid crystal panel; and a reversal driving control portion that includes a pause frame counting portion for counting as a count value the number of times of pause frames since generation of a refresh frame until generation of the next refresh frame, receives the image signal, decides which of a refresh frame or a pause frame each frame is set to, and decides a reversal driving technique for applying an AC voltage to the liquid crystal, to control an operation of the liquid crystal panel driving portion, wherein, when a frame in which the image signal is inputted from the external portion without requesting the external portion to input the image signal is defined as a first input frame, the reversal driving control portion sets the first input frame to a refresh frame, and decides the reversal driving technique in the first input frame based on the count value such that the frequency of spatial polarity reversal of a liquid crystal applied voltage gradually becomes higher as the count value becomes larger.