Scanning backlight method and scanning backlight device

Abstract

The invention provides a scanning backlight method and a scanning backlight device. The method includes the steps: turning on a backlight set after stabilizing response of pixel liquid crystal of corresponding areas and adjacent areas of the backlight set with a side-light type backlight source; and turning off the backlight set before starting a next response period of the pixel liquid crystal of the adjacent areas of the backlight set. By controlling turn-on and turn-off time of the backlight set, on the premise of ensuring scanning backlight definition, the scanning backlight technology of the backlight source based on a whole light guide element is realized, the problem of difficulty in applying scanning backlight to the whole light guide element is solved, and the application range of the scanning backlight is widened.

Description

technical field [0001] The present invention relates to the field of backlight technology, in particular to a scanning backlight method and device. Background technique [0002] Scanning backlight technology is to divide the liquid crystal display into multiple areas according to the horizontal area. In any area, choose to turn on or off the backlight group at the appropriate position of the liquid crystal response curve, such as light-emitting diode (LED) light group. When the liquid crystal response curve is in the In the slow rising or falling stage (smearing stage), the backlight is turned off, and the backlight is turned on when the liquid crystal response curve is stable. Scanning backlight technology can improve the clarity of the picture, reduce smearing, and improve contrast; and in order to make the backlight use the scanning backlight technology while maintaining the characteristics of thinness, the use of side-light scanning backlight technology has become a rese...

AI Technical Summary

Problems solved by technology

[0003] In the application of side-light scanning backlight technology, the scanning backlight is usually based on the block-type light guide element, but the manufacturing process of the block-type light guide element is relatively complicated, and the implementation cost is high; therefore, the block-type light guide element The application of optical components has received more and more attention

However, when applying a monolithic light guide element, a big problem is to ensure that the light in the area illuminated by the backlight group does not diffuse into the area where the liquid crystal of other pixels of the light guide element has not yet responded stably, thereby ensuring scanning The advantages of backlight, picture clarity, etc.

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