Patent ID: 8933870
Filing Date: 2015-01-13
Classification: G09G

Abstract:
1. A drive circuit for driving a display panel including a plurality of pixels, the drive circuit comprising: a plurality of unit drive circuits which are provided for respective groups formed by dividing the plurality of pixels, each unit drive circuit outputting a drive signal which becomes a first potential at the time of driving the group of pixels and becomes a second potential at the time of non-driving the group of pixels during a common control period among the groups of pixels; and first to n-th power source circuits (n being a natural number of 2 or more) each of which selectively outputs a third potential which is an intermediate potential between the first potential and the second potential and the second potential, each unit drive circuit comprising: a selective pulse output circuit which outputs a selective pulse having the first potential during an outputting operation period set sequentially in the control period for every group of pixels; and a k-th output terminal switch which is comprised of a transistor and which establishes or interrupts the connection between an output terminal of the unit drive circuit and the k-th power source circuit (k being an integer satisfying 1≦k≦n), wherein at least one of the first to n-th output terminal switches is brought into an ON state, and the output terminal switches are alternately brought into an OFF state during the control period other than the outputting operation period, and wherein the k-th power source circuit is configured to output only the second potential which is inputted to a source of the k-th output terminal switch during a period where the k-th output terminal switch is in an ON state and to output the third potential which is inputted to the source of the k-th output terminal switch within at least a portion of a period where the k-th output terminal switch is in an OFF state.