Patent ID: 8477123
Filing Date: 2013-07-02
Classification: G09G

Abstract:
1. A display apparatus comprising: an effective pixel section having a plurality of pixel circuits arranged to form a matrix, each pixel circuit including a switching device through which pixel video data is written into said pixel circuit; a plurality of scan lines respectively provided for individual rows of said pixel circuits arranged on said effective pixel section to control the conduction states of said switching devices; a plurality of capacitor lines respectively arranged for the individual rows of said pixel circuits; a plurality of signal lines respectively arranged for individual columns of said pixel circuits to propagate said pixel video data; a first driving circuit configured to selectively drive said scan lines and said capacitor lines; and a second driving circuit configured to drive said signal lines, wherein said second driving circuit includes a voltage driving circuit having a voltage boosting function for carrying out a voltage boosting operation to boost an input voltage having a level with a dynamic range insufficient for a gradation expression; said voltage driving circuit outputs a voltage obtained as a result of said voltage boosting operation or an unboosted voltage as a signal to one of said signal lines; and said voltage driving circuit has a select function for disabling said voltage boosting function for only a set of gradations determined in advance and implementing said voltage boosting function to boost said input voltage to an output voltage according to the level of said input voltage for gradations other than said set of gradations determined in advance, wherein the voltage driving circuit boosts only a black side with large voltage variations by setting a gradation zero as the set of gradations determined in advance, such that the voltage driving circuit disables the voltage boosting operation only for the gradation zero.