Patent ID: 7567230
Filing Date: 2009-07-28
Classification: G02F,G09G

Abstract:
1. A liquid crystal display device comprising: a first substrate; a second substrate; a liquid crystal composition sandwiched between said first substrate and said second substrate; a plurality of pixels disposed on said first substrate; each of said plurality of pixels being supplied with a video signal via a switching element connected to a first electrode thereof; each of said plurality of pixels being provided with a capacitance; one of two capacitance-forming electrodes forming said capacitance being connected to said first electrode of a corresponding one of said plurality of pixels; another of said two capacitance-forming electrodes being supplied with a pixel-potential control signal by a pixel-potential control circuit; and light-blocking films overlapping gaps between electrodes forming said plurality of pixels on said first substrate; wherein a polarity of said video signal reverses with respect to a first reference voltage with a repetition period; wherein said pixel-potential control signal alternates between two voltage levels of the same polarity with respect to a second reference voltage so that a voltage on said first electrode of the corresponding one of said plurality of pixels is reversed in polarity with respect to said first reference voltage; wherein said pixel-potential control signal is provided via a corresponding one of said light-blocking films; and wherein said light-blocking films are formed above said pixel-potential circuit.