Patent ID: 6621488
Filing Date: 2003-09-16
Classification: G09G

Abstract:
An image display device, comprising:an optical illumination system capable of emitting three-color illumination light including red light, green light, and blue light; an image display unit including a modulation panel having a plurality of pixels that allow illumination light emitted by the optical illumination system to be modulated in accordance with supplied drive signals; and a controller that controls the optical illumination system and the modulation panel; the modulation panel including for each pixel: a drive signal storage section that stores the drive signals corresponding to the three colors used for modulating individual components of the three-color illumination light; a color selection section that selects one of the drive signals stored in the drive signal storage section; and a modulation-executing section that performs modulation in accordance with the drive signal selected by the color selection section, and wherein the controller controls the lighting of the optical illumination system such that the modulation panel is illuminated with the three-color illumination light in a recurring fashion one color at a time, and controls the color selection section such that one of the drive signals stored in the drive signal storage section is applied to the modulation-executing section while being switched in synchronism with the lighting timing of the three-color illumination light, wherein the drive signal storage section for each pixel includes: a first switching circuit connected to a data line for feeding the drive signals; a primary storage section that stores the drive signals fed to the first switching circuit; a second switching circuit connected to the output side of the primary storage section; and a secondary storage section connected to the color selection section and designed for storing the drive signals fed from the primary storage section via the second switching circuit.