| 摘要 |
PURPOSE: A three dimensional glass using dual-frequency liquid crystal is provided to implement the liquid crystal having fast response speed and to obtain stereoscopic perception. CONSTITUTION: A sync signal receiving unit(201) receives a synchronizing signal from a 3D display device. A frequency control unit(203) controls opening and shutting of a right eye glass(207) and a left-eye glass(205) based on the synchronizing signal. The left eye glass and the right eye glass are made of dual frequency liquid crystal. The direction of the liquid crystal is changed according to the frequency shift. [Reference numerals] (201) Sync signal receiving unit; (203) Frequency control unit; (205) Left eye glass; (207) Right eye glass; (209) Power supply unit
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