Abstract: An exemplary LCD includes a frame memory configured for receiving a plurality of first gradations of current frame and outputting a plurality of second gradations of preceding frame pre-stored therein; a comparator configured for receiving, comparing the first gradations with the second gradation to generate a comparison result; a luminance detector configured for detecting a luminance degree of each of pixel according to the gradations of current frame; a calculator configured for calculating a complication degree of a picture to be displayed in current frame; and a gradation processor configured for receiving the first gradations of current frame to be displayed on the LCD panel, generating a plurality of pairs of compensating gradations according to the gradation of each pixel, and selecting one pair of the compensating gradations to be outputted to the LCD panel according to a received comparison result, a received luminance degree, and a received complication degree.

Abstract: An exemplary liquid crystal display (300) includes a liquid crystal panel (301), a data circuit (303), and a black insertion controller (305). The liquid crystal panel includes a plurality of pixels (330). The black insertion controller receives a display signal of the pixel, and generates a black insertion control signal according to an address of the pixel, and the data circuit drives the pixel to display one of a black image unit and a normal image unit according to the black insertion control signal in a first sub-frame period of a frame period. The displayed black image unit of the pixel or the displayed normal image unit is converted into a normal image unit or a black image unit in a second sub-frame period of the frame period. A method for driving the liquid crystal display is also provided.

Abstract: An exemplary liquid crystal display includes a frame buffer (41), a frame rate conversion circuit (42), a data divider (43), and a data driver (44). The frame buffer is configured for doubling a frame rate of inputted signals. The frame rate conversion circuit is configured for reducing a bit number of signals. The frame rate conversion circuit includes a first and a second look up table. The first look up table converts a gray level of one of the sub-frames into a higher gray level corresponding to signals with the lower bit number. The second look up table is configured for converting a gray level of the other sub-frame into a lower gray level corresponding to signals with the lower bit number. The data divider is configured for transmitting the signals to the data driver in several buses. The data driver drives the liquid crystal display to display images.

Abstract: A liquid crystal display (1) includes a liquid crystal panel (10) including pixel units, a digital video card (14), a regulator (12) and a controller (13). The digital video card is configured for sequentially generating video signals. The regulator is configured for generating modulated video signals and generating a black-inserting signal. The controller is configured for receiveing the source video signals, the modulated video signals and the black-inserting signal, and selectively outputting the source video signals, the modulated video signals and the black-inserting signal to the pixel units during each frame.

Abstract: An exemplary method for driving a typical liquid crystal display (2) with a matrix of pixels (205) includes the steps of: (a) applying video signals with a first polarity pattern to the pixels during a frame period, (b) re-defining the first polarity pattern by sequentially shifting the polarity sequences of one row to an adjacent row within a 2K-by-2K square sub-matrix of the pixels; (c) applying video signals with the re-defined first polarity pattern to the matrix of pixels during next frame period; and (d) repeating steps (b) and (c).

Abstract: An exemplary driving circuit (250) of an LCD (200) includes: gate lines (210) that are parallel to each other and that each extend along a first direction; data lines (202) that are parallel to each other and that each extend along a second direction substantially orthogonal to the first direction; a gate driving circuit (210) connected to the gate lines; a data driving circuit (220) connected to the data lines; and a pre-charging voltage circuit (240). The pre-charging voltage circuit is configured to provide a pre-charging voltage to each of the data lines before the gate driving circuit scans the gate lines.

Abstract: The present invention concerns to a press key structure with a light module in use of illuminant variation for arrow keys of an appliance. The press key structure with light module comprises a key base plate, a light source, a spread slice and a light guiding cap. The light guiding cap includes a crown part, a chamber, and a mouth part that is set on the key base plate and can exactly cover up the above light source. The spread slice is set in the chamber of the light guiding cap so that the light is evenly spread through the light guiding function of the spread slice. Moreover, by adjusting the thickness, transparency, and inside cambered surface of the spread slice, or the distance between the spread slice and the light source, the light guiding property thereof can be modulated.

Abstract: The present invention concerns to an illuminant button structure that can be set on the front side of a media center extender. The illuminant button structure comprises a button base plate, a light source and a light transmitting button cap. There is a containing chamber on the button base plate in which a fixing groove is set to fix the aforesaid light source. The light transmitting button cap includes a light-entering surface and a light-exiting surface, wherein the light-entering surface forms a light transmitting curved surface and also a ring shaped light display area on the exterior surface; as a result, the light from the light source can be evenly emitted.

Abstract: This invention discloses a direction key structure that prevents correlated action, the simultaneous activation of two directions. By using a center shaft for a fulcrum, and in cooperation with four direction ribs set under a direction key housing, the direction key housing can act as a joystick. Four rods for preventing correlated action are set under the key direction housing, and each rod is set between two neighboring direction ribs so that the correlated action is avoided.