时分全分辨率可控液晶光栅设计

Study of a Controllable Full Resolution Liquid Crystal Grating Based on Time Division

设计了一种可实现分光效果的可控液晶光栅.该液晶光栅由双层交错结构的驱动电极来控制液晶偏转,避免了单层控制电极之间的空白区,增加了控制面积,同时还实现了快速切换,补给了因空间分割损失的图像信息,从而使空分与时分结合实现时分全分辨率的自由立体显示.利用光刻和镀膜工艺在玻璃基板上制作氧化铟锡-二氧化硅-掺铝氧化锌双层交错结构的驱动电极,采用液晶成盒工艺将制备好的驱动电极基板和公共电极基板组装成液晶盒.光学显微镜测试表明,氧化铟锡第一电极和掺铝氧化锌第二电极的宽度为275.8μm,两者之间通过SiO2介质层隔离并相互交错覆盖在玻璃基板上.结合液晶光栅驱动电路,能有效地控制遮光区与透光区的切换,从而实现时分全分辨率可控液晶光栅.

An electrically tunable liquid crystal grating with two-layer driving staggered electrodes was presented,which could replace the traditional slit liquid crystal grating to achieve a parallax barrier.This grating avoids the blank area between the single-layer electrodes and expands the control area.Besides,it has the advantage of fast switching time to supply the loss of informations caused by space division.A full resolution autostereoscopic display was realized by combining space division and time division.Indium-Tin Oxide（ITO）-SiO2-Al-doped ZnO（AZO）driving electrodes with two-layer staggered structure were prepared on the glass substrate using lithography and vacuum coating technology.Liquid crystal was sandwitched between the substrate with driving electrodes and a substrate with common electrodes to form a cell with a thickness of 5μm.The optical images show that ITO electrodes and AZO electrodes with the width of 275.8μm are parallelly interdigitated and isolated by SiO2 insulation layer on the glass substrate.A controllabel full resolution liquid crystal was achieved by switching shading areas and transparent areas in the role of driving voltage.