Color sequence LCD and pixel circuit thereof

Abstract

The invention provides a color sequence liquid crystal display device and a pixel circuit thereof. The pixel circuit comprises a first sampling switch, a second sampling switch, a first voltage register, a second voltage register, a first output switch, a second output switch, a liquid crystal capacitance and a replacement switch, wherein the first voltage register is coupled with the first sampling switch and the first output switch, first sampling voltage is temporarily stored during a first subframe period, and the first sampling voltage is output to the liquid crystal capacitance during asecond subframe period. The second voltage register is coupled with the second sampling switch and the second output switch, second sampling voltage is temporarily stored during the second subframe period, and the second sampling voltage is output to the liquid crystal capacitance during the first subframe period. The replacement switch is coupled with the liquid crystal capacitance, and replacement voltage is transmitted to the liquid crystal capacitance between a first subframe and a second subframe. The color sequence liquid crystal display device and the pixel circuit thereof can increasethe operation efficiency of the pixel circuit, and prolongs the time of lighting monochromatic light source of a pixel.

Description

technical field [0001] The present invention relates to a plane display technology, and in particular to a color sequential liquid crystal display and its pixel circuit. Background technique [0002] With the development of optoelectronics and semiconductor technology, the vigorous development of flat-panel displays has been driven. Among many flat-panel displays, liquid crystal displays have become the market leader due to their superior characteristics such as high space utilization efficiency, low power consumption, no radiation, and low electromagnetic interference. mainstream. Generally speaking, traditional liquid crystal display panels use sub-pixels of three primary colors (ie red, green and blue sub-pixels) to mix colors on the spatial axis to display the desired color and brightness of image data. [0003] Also because of this, a red, green, and blue color filter must be set at each pixel position of a traditional liquid crystal display panel, and a white backligh...

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Problems solved by technology

[0007] Also because of this, if the operation speed of the color sequence method is too low, the phenomenon of color breakup (Color Breakup) is likely to occur, and the demand for high operation speed, coupled with the fact that every traditional design of the color sequence method Subframes need to free up independent data writing time constraints, so that the liquid crystal response time and monochromatic light source lighting time will be greatly compressed

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