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US 2003/0117355 A1Published application
Field sequential liquid crystal display device and driving method therefor
AssigneeCasio Computer Co., Ltd.
InventorShingo Yamauchi
Life of this patent
Estimating the term…
Abstract
A liquid crystal display device incorporates, within the same integrated circuit, a plurality of memories which store R, G, and B data supplied in parallel from an image source for the respective color components, a multiplexer which serially reads out the R, G, and B data stored in these memories and supplies them to the liquid crystal display unit, a mode switch, a D/A converter, and a buffer amplifier.
Claims20
A liquid crystal display device comprising:
- a matrix liquid crystal display unit having a plurality of pixels arranged in the form of a matrix;
- an illumination device which is placed behind the display unit and sequentially emits light beams of a plurality of colors to the liquid crystal display unit in predetermined cycles;
- and
- a display driver formed into an integrated circuit which supplies display data corresponding to one of the plurality of colors to the liquid crystal display unit for each of a plurality of fields obtained by dividing one frame for displaying one color image by the number of colors of light beams emitted from the illumination device to cause the illumination device to emit light beams of corresponding colors in accordance with display of the display data, thereby displaying one color image upon synthesis of display of a plurality of colors for the respective fields,
- wherein the display driver has a plurality of memories which store display data of a plurality of colors for the respective color components,
- a memory write section which causes the plurality of memories to store display data of a plurality of colors supplied in parallel from an image source for the respective color components, and
- a display data read circuit which serially reads out display data of a plurality of colors stored in the plurality of memories for each color and supplies the display data to the liquid crystal display device, the memories, the memory write section, and the display data read circuit being formed within the same integrated circuit.
4 more elements
A liquid crystal display device comprising:
- display means having a plurality of pixels arranged in the form of a matrix, and displaying an image by using the plurality of pixels;
- illumination means placed behind the display device, and sequentially emitting light beams of a plurality of colors to the display means in predetermined cycles;
- and
- driving means formed into an integrated circuit, for supplying display data corresponding to one of the plurality of colors to the display means for each of a plurality of fields obtained by dividing one frame for displaying one color image by the number of colors of light beams emitted from the illumination means to cause the illumination means to emit light beams of corresponding colors in accordance with display of the display data, thereby displaying one color image upon synthesis of display of a plurality of colors for the respective fields,
- wherein the driving means has a plurality of storage means for storing display data of a plurality of colors for the respective color components,
- memory write means for causing the plurality of storage means to store display data of a plurality of colors supplied in parallel from an image source for the respective color components, and
- display data read means for serially reading out display data of a plurality of colors stored in the plurality of storage means for each color and supplying the display data to the display means, the plurality of storage means, the memory write means, and the display data read means being formed within the same integrated circuit.
4 more elements
A driving method for a liquid crystal display device comprising the steps of:
- causing a plurality of FIFO (First In First Out) memories, each having a storage capacity of not less than 2×n×m bits, where n is the number of bits representing one image data by digital data and m is the number of scanning lines of the liquid crystal display unit, to store display data of a plurality of colors, for the respective color components, which are supplied in parallel from an image source;
- serially reading out display data of a plurality of colors stored in the plurality of memories for each of a plurality of fields obtained by dividing one frame for displaying one color image by the number of colors of the display data in a predetermined order of colors, and supplying the data to the liquid crystal display unit;
- and
- causing an illumination device to generate light beams of colors corresponding to display for each field based on the display data and emit the light beams to the liquid crystal display unit,
- wherein one color image is displayed by synthesizing display of a plurality of colors for each of a plurality of fields on the basis of display data corresponding to the plurality of colors.
2 more elements
Dependencies are inferred from the claim text.