Abstract: A liquid crystal display device which may prevent a color mixing phenomenon and a driving method thereof, the liquid crystal display device including a first substrate and a second substrate facing each other; a thin film transistor disposed inside the first substrate; a color conversion layer disposed inside the second substrate and including a plurality of quantum rods; a liquid crystal layer disposed between the first substrate and the second substrate; a first polarizer disposed outside the first substrate; and a second polarizer disposed outside the second substrate.

Abstract: A liquid crystal display device which may prevent a color mixing phenomenon and a driving method thereof, the liquid crystal display device including a first substrate and a second substrate facing each other; a thin film transistor disposed inside the first substrate; a color conversion layer disposed inside the second substrate and including a plurality of quantum rods; a liquid crystal layer disposed between the first substrate and the second substrate; a first polarizer disposed outside the first substrate; and a second polarizer disposed outside the second substrate.

Abstract: A projection television and a convergence control method thereof are provided.

Abstract: A projection display apparatus with red (R), green (G), and blue (B) monochromatic cathode ray tubes (CRTs) and three projection lenses, disposed in front of the R, G, and B monochromatic CRTs respectively, along with a screen having a predetermined curvature concave in a view direction to control a view distance and focus the light rays projected from the respective projection lenses. The screen includes a Fresnel screen converting the light rays incident from the projection lenses to have predetermined optical directional characteristics in an optical axis direction, and a Lenticular screen, disposed in front of the Fresnel screen and having a curvature corresponding to the Fresnel screen, for forming images from the light rays passing through the Fresnel screen, controlling a view angle, and enhancing an entire screen luminance. The view distance is determined based on a focal length and a curvature radius of the Fresnel screen.

Abstract: A projection display apparatus with red (R), green (G), and blue (B) monochromatic cathode ray tubes (CRTs) and three projection lenses, disposed in front of the R, G, and B monochromatic CRTs respectively, along with a screen having a predetermined curvature concave in a view direction to control a view distance and focus the light rays projected from the respective projection lenses. The screen includes a Fresnel screen converting the light rays incident from the projection lenses to have predetermined optical directional characteristics in an optical axis direction, and a Lenticular screen, disposed in front of the Fresnel screen and having a curvature corresponding to the Fresnel screen, for forming images from the light rays passing through the Fresnel screen, controlling a view angle, and enhancing an entire screen luminance. The view distance is determined based on a focal length and a curvature radius of the Fresnel screen.

Abstract: Provided are an apparatus and method for controlling CRT focusing in a television, and more particularly, an apparatus and method for separately controlling focusing of R, G, and B cathode ray tubes in a television using a triple tube type optical system based on a digital method. The apparatus includes a memory, a controller, and an R/G/B focusing correction signal generator. The memory stores focusing correction data of R, G, and B cathode ray tubes for a position of a screen. The controller reads and outputs the focusing correction data of the R, G, and B cathode ray tubes from the memory for the position of the screen, based on horizontal and vertical synchronization signals. The R/G/B focusing correction signal generator calculates the focusing correction data of the R, G, and B cathode ray tubes read from the memory and generates R, G, and B analog focusing correction signals that will be applied to R, G, and B coils.

Abstract: A convergence control method and apparatus for a projection television are provided. The convergence control apparatus includes an image signal decoder, a convergence control unit, and a main microcomputer. The image signal decoder processes an input image signal and generates a data signal and horizontal and vertical synchronization signals, and a start signal indicating the start of either the horizontal and vertical synchronization signals. The convergence control unit performs convergence adjustment according to a convergence control command it receives, and generates a completion signal when convergence adjustment is complete. The main microcomputer inputs the convergence control command to the convergence control unit when the start signal is input from the image signal decoder, and performs a control operation to display the image signal when the completion signal is input from the convergence control unit.

Abstract: A projection television and a convergence control method thereof are provided.

Abstract: A convergence control method and apparatus for a projection television are provided. The convergence control apparatus includes an image signal decoder, a convergence control unit, and a main microcomputer. The image signal decoder processes an input image signal and generates a data signal and horizontal and vertical synchronization signals, and a start signal indicating the start of either the horizontal and vertical synchronization signals. The convergence control unit performs convergence adjustment according to a convergence control command it receives, and generates a completion signal when convergence adjustment is complete. The main microcomputer inputs the convergence control command to the convergence control unit when the start signal is input from the image signal decoder, and performs a control operation to display the image signal when the completion signal is input from the convergence control unit.