CN105607171B - 卷对卷制备2d/3d光栅切换膜的方法 - Google Patents

卷对卷制备2d/3d光栅切换膜的方法 Download PDF

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CN105607171B
CN105607171B CN201610187507.1A CN201610187507A CN105607171B CN 105607171 B CN105607171 B CN 105607171B CN 201610187507 A CN201610187507 A CN 201610187507A CN 105607171 B CN105607171 B CN 105607171B
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roller
mirror metal
liquid
concave grating
metal roller
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CN105607171A (zh
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李应樵
顾开宇
王华波
张春光
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Ningbo Wanwei Display Technology Co Ltd
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Abstract

卷对卷制备2D/3D光栅切换膜的方法，属于3D显示技术领域，本发明为解决目前制备2D/3D切换膜难以连续生产，浪费材料严重，效率低的问题。本发明方法为：同时进行步骤一和步骤二，然后执行步骤三，最后执行步骤四；步骤一、凹光栅面朝下经摩擦、液晶滴定；步骤二、均匀涂布PI液至镜面金属辊的表层；再进行自加热摩擦；步骤三、步骤一完成的摩擦好、并滴好液晶的凹光栅与步骤二完成的涂有PI层且摩擦取向好的镜面金属辊相互贴合形成光栅膜；再所述光栅膜随同镜面金属辊旋转，通过镜面金属辊与镜面金属辊的下侧辊进行贴合预烘烤；步骤四、贴合烘烤后的光栅膜经UV固化机固化并剥离后通过2D/3D光栅切换膜收材卷辊收卷。

Description

卷对卷制备2D/3D光栅切换膜的方法
技术领域
本发明属于3D显示技术领域。
背景技术
裸眼3D的发展，客观上摆脱了借助立体眼镜等辅助设备才能观看3D效果的束缚，提高了观看的舒适度及拓宽了应用领域，也给人们生活、工作带来很大的裨益，备受关注。
柱透镜光栅主要利用光的折射原理进行分光，将一条条微小柱状的透镜单体沿着径向排列即形成柱透镜光栅阵列，简称柱透镜光栅。这种柱透镜光栅作为立体显示技术的一种得到了广泛应用。
传统的柱透镜光栅阵列式立体显示器，无法实现2D/3D的切换，观看者在看没有3D效果的文字图像等往往出现模糊不清的感觉，没有2D显示效果好。
现有技术公开了一种光栅2D/3D切换装置：中国专利《一种2D/3D切换型立体显示器及其控制方法》，公开号为CN102096229A，公开日期为2011年6月15日，其结构包括2D显示器、TN盒、2D/3D光栅切换膜。2D显示器用于提供具有一偏振方向的图像。TN盒通过开/关电用于旋转图像的偏振方向，以使2D/3D切换型立体显示器在2D显示状态下与3D显示状态之间进行切换。2D/3D光栅切换膜通过填充固态液晶，使得固态液晶的双折射性与固态聚合物的折射率相匹配且对于正性液晶来说，固态聚合物的折射率与液晶短轴折射率相匹配来实现光的折射与直射。
目前，2D/3D光栅切换膜制作需要经过两道摩擦取向、填充液晶、贴合、烘烤、固化等工序，每道工序单一完成，现有技术无法做到连续生产，通常通过人工来完成每道工艺，生产效率低、浪费严重。
因而，亟待一种能够连续生产且能保证精度的高效率的卷对卷制2D/3D膜的工艺方法。
发明内容
本发明目的是为了解决目前制备2D/3D切换膜难以连续生产，浪费材料严重，效率低的问题，提供了一种卷对卷制备2D/3D光栅切换膜的方法。
本发明所述卷对卷制备2D/3D光栅切换膜的方法，该方法采用制备装置包括凹光栅进材卷轴、凹光栅摩擦滚筒、下侧辊、滴液晶机、PI摩擦机、镜面金属辊、上侧辊、PI滴液机、PI液整平辊、UV固化机和2D/3D光栅切换膜收材卷辊；下侧辊从斜下方与镜面金属辊相切，二者间隙为d，上侧辊从斜上方与镜面金属辊相切；摩擦滚筒从正下方与下侧辊相切且有一定的绒毛压入量；PI液整平辊从侧面与上侧辊相切；PI摩擦机从侧面与镜面金属辊相切且有一定的绒毛压入量；凹光栅进材卷轴、凹光栅摩擦滚筒、镜面金属辊和PI液整平辊为旋转方向相同；下侧辊、PI摩擦机和上侧辊的旋转方向相同；且下侧辊和镜面金属辊的旋转方向相反；
该方法为：同时进行步骤一和步骤二，然后执行步骤三，最后执行步骤四；
步骤一、凹光栅进材卷轴自右往左传送凹光栅卷材，凹光栅面朝下，与凹光栅摩擦滚筒摩擦；摩擦好的凹光栅通过位于下侧辊上方的滴液晶机进行表面幅宽的液晶滴定，随下侧辊旋转至与镜面金属辊相切处；
步骤二、PI滴液机向上侧辊表面滴PI液，上侧辊表面的PI液经由PI液整平辊整平均匀后再旋转涂布到镜面金属辊的表层；
表层涂布有PI液的镜面金属辊旋转，通过自加热对表层的PI液进行流平后烘烤固化，固化好的PI层再经PI摩擦机进行90°摩擦；摩擦方向与凹光栅表面摩擦方向一致；
步骤三、步骤一完成的摩擦好、并滴好液晶的凹光栅与步骤二完成的涂有PI层且摩擦取向好的镜面金属辊相互贴合形成光栅膜；所述光栅膜随同镜面金属辊旋转，通过镜面金属辊与镜面金属辊的下侧辊进行贴合预烘烤；
步骤四、贴合烘烤后的光栅膜经UV固化机固化并剥离后通过2D/3D光栅切换膜收材卷辊收卷。
本发明的优点：本发明工艺方法可连续制备2D/3D切换膜，在凹光栅凹槽填满液晶不会造成凹光栅压伤，固化后的切换膜从镜面金属辊上剥离后，镜面金属辊表面无残渍，制备效率高。
附图说明
图1是本发明所述卷对卷制备2D/3D光栅切换膜的方法的原理图；
图2是凹光栅与凹光栅摩擦滚筒摩擦的原理图，凹光栅具有一定的角度。
具体实施方式
具体实施方式一：下面结合图1和图2说明本实施方式，本实施方式所述卷对卷制备2D/3D光栅切换膜的方法，该方法采用制备装置包括凹光栅进材卷轴1、凹光栅摩擦滚筒2、下侧辊3、滴液晶机4、PI摩擦机5、镜面金属辊6、上侧辊7、PI滴液机8、PI液整平辊9、UV固化机和2D/3D光栅切换膜收材卷辊13；下侧辊3从斜下方与镜面金属辊6相切，二者间隙为d，上侧辊7从斜上方与镜面金属辊6相切；摩擦滚筒2从正下方与下侧辊3相切且有一定的绒毛压入量；PI液整平辊9从侧面与上侧辊7相切；PI摩擦机5从侧面与镜面金属辊6相切且有一定的绒毛压入量；凹光栅进材卷轴1、凹光栅摩擦滚筒2、镜面金属辊6和PI液整平辊9为旋转方向相同；下侧辊3、PI摩擦机5和上侧辊7的旋转方向相同；且下侧辊3和镜面金属辊6的旋转方向相反；
该方法为：同时进行步骤一和步骤二，然后执行步骤三，最后执行步骤四；
步骤一、凹光栅进材卷轴1自右往左传送凹光栅卷材，凹光栅面朝下，与凹光栅摩擦滚筒2摩擦；摩擦好的凹光栅通过位于下侧辊3上方的滴液晶机4进行表面幅宽的液晶滴定，随下侧辊3旋转至与镜面金属辊6相切处；
步骤二、PI滴液机8向上侧辊7表面滴PI液，上侧辊7表面的PI液经由PI液整平机9整平均匀后再涂布到镜面金属辊6的表层；
表层涂布有PI液的镜面金属辊6旋转，通过自加热对表层的PI液进行流平后烘烤固化，固化好的PI层再经PI摩擦机5进行90°摩擦；摩擦方向与凹光栅表面摩擦方向一致；
步骤三、步骤一完成的摩擦好、并滴好液晶的凹光栅与步骤二完成的涂有PI层且摩擦取向好的镜面金属辊6相互贴合形成光栅膜；所述光栅膜随同镜面金属辊6旋转，通过镜面金属辊6与镜面金属辊的下侧辊3进行贴合预烘烤；
步骤四、贴合烘烤后的光栅膜经UV固化机固化并剥离后通过2D/3D光栅切换膜收材卷辊13收卷。
UV固化机包括精密反光罩10、大功率UV固化灯11和光线准直光学系统12；大功率UV固化灯11位于镜面金属辊6的下方，光线准直光学系统位于镜面金属辊6与大功率固化灯11之间，精密反射罩10位于大功率固化灯11的外侧。
下侧辊3和镜面金属辊6的间隙d小于等于凹光栅卷材整体厚度且能保证凹光栅凹槽填满液晶又不会造成凹光栅压伤。
所述的凹光栅进材卷辊1，是将卷好带有一定角度的、折射率固定的微小的透镜凹光栅阵列逆时针旋转且凹光栅面朝下进行送料。
所述的镜面金属辊6的下侧辊7的下侧与PI摩擦机5进行90°摩擦，上侧通过滴液晶机4重复来回滴液晶。
凹光栅摩擦滚筒2包括辊筒、摩擦绒布及专用双面胶，摩擦辊筒的转述可以控制，摩擦绒布的压入量也可以上下调节，用于对凹光栅面定向。
凹光栅摩擦滚筒2对缠绕在下侧辊3表面的凹光栅进行摩擦，摩擦强度可根据如下公式来计算：
其中Nd表示摩擦强度；M表示摩擦次数；D表示绒布的压入量；W表示摩擦辊筒旋转的角速度；r表示辊筒的半径；V表示基板前进速度。
滴液晶机4：通过事先将固态液晶烘烤熔化后的液态液晶通过液晶流体针筒根据幅面进行滴液晶。这种流体针筒可以通过外部缠绕加热电阻丝以保证液晶针筒的温度可以控制。液晶的控制温度范围为介于固态液晶熔化的熔点与清凉点之间，使得熔融态液晶便于在流体针筒内容易流动。
镜面金属辊6，与上侧辊7相切，与下侧辊3存在间隙。镜面金属辊6的旋转方向与两侧辊相反。这种镜面金属辊可通过内部加热，使得上侧辊7通过涂PI液时，从开始涂敷PI到PI摩擦机5轨迹范围能通过镜面金属辊筒自加热充分烘烤干。
镜面金属辊6自加热的温度低于凹光栅承受的范围。
镜面金属辊6自加热的温度高于PI液烘烤温度范围。
上侧辊3通过PI液涂敷到镜面金属辊6上，PI滴液机在上侧辊3幅面范围内重复滴PI液时还通过整平PI液整平辊9将上侧辊3表面的PI液整平，以便于上侧辊3均匀涂布于镜面金属辊6表层。
PI液为低温PI液。
镜面金属辊6上，涂敷均匀且烘烤完全的PI层通过摩擦辊筒进行90°摩擦，以得到液晶取向的单层。
下侧辊7与镜面金属辊6的间隙可以调节，用于将滴好的液晶通过下侧辊7与上侧辊3进行贴合并预烘。
镜面金属辊6上贴合好、预烘好的2D/3D光栅切换膜进行UV固化后剥离。剥离后镜面金属辊6表面无任何PI粉末、液晶残留，以保证镜面金属辊6可以连续进行PI均匀涂覆、烘烤、摩擦等。
镜面金属辊6表面光滑，既有利于PI摩擦又有利于2D/3D光栅膜完全剥离无残渍。
2D/3D光栅切换膜卷辊13：用于对固态液晶取向好的光栅膜进行卷收。
本发明通过示范性的描述一种可卷对卷连续性制备2D/3D光栅切换膜的工艺方法，对本工艺方法的简单列改属于本发明的保护范围。

Claims (2)

1.卷对卷制备2D/3D光栅切换膜的方法，其特征在于，该方法采用制备装置包括凹光栅进材卷辊(1)、凹光栅摩擦滚筒(2)、下侧辊(3)、滴液晶机(4)、PI摩擦机(5)、镜面金属辊(6)、上侧辊(7)、PI滴液机(8)、PI液整平辊(9)、UV固化机和2D/3D光栅切换膜收材卷辊(13)；下侧辊(3)从斜下方与镜面金属辊(6)相切，二者间隙为d，上侧辊(7)从斜上方与镜面金属辊(6)相切；摩擦滚筒2从正下方与下侧辊(3)相切；PI液整平辊(9)从侧面与上侧辊(7)相切；PI摩擦机(5)从侧面与镜面金属辊(6)相切；凹光栅进材卷辊(1)、凹光栅摩擦滚筒(2)、镜面金属辊(6)和PI液整平辊(9)为旋转方向相同；下侧辊(3)、PI摩擦机(5)和上侧辊(7)的旋转方向相同；且下侧辊(3)和镜面金属辊(6)的旋转方向相反；
该方法为：同时进行步骤一和步骤二，然后执行步骤三，最后执行步骤四；
步骤一、凹光栅进材卷辊(1)自右往左传送凹光栅卷材，凹光栅面朝下，与凹光栅摩擦滚筒(2)摩擦；摩擦好的凹光栅通过位于下侧辊(3)上方的滴液晶机(4)进行表面幅宽的液晶滴定，随下侧辊(3)旋转至与镜面金属辊(6)相切处；
步骤二、PI滴液机(8)向上侧辊(7)表面滴PI液，上侧辊(7)表面的PI液经由PI液整平辊(9)整平均匀后再涂布到镜面金属辊(6)的表层；
表层涂布有PI液的镜面金属辊(6)旋转，通过自加热对表层的PI液进行流平后烘烤固化，固化好的PI层再经PI摩擦机(5)进行90°摩擦；摩擦方向与凹光栅表面摩擦方向一致；
步骤三、步骤一完成的摩擦好、并滴好液晶的凹光栅与步骤二完成的涂有PI层且摩擦取向好的镜面金属辊(6)相互贴合形成光栅膜；所述光栅膜随同镜面金属辊(6)旋转，通过镜面金属辊(6)与镜面金属辊的下侧辊(3)进行贴合预烘烤；
步骤四、贴合烘烤后的光栅膜经UV固化机固化后通过2D/3D光栅切换膜收材卷辊(13)收卷。
2.根据权利要求1所述卷对卷制备2D/3D光栅切换膜的方法，其特征在于，下侧辊(3)和镜面金属辊(6)的间隙d小于等于凹光栅卷材整体厚度且能保证凹光栅凹槽填满液晶又不会造成凹光栅压伤。
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