CN107229131A - 用于驱动裸眼3d液晶棱镜的***和方法 - Google Patents

用于驱动裸眼3d液晶棱镜的***和方法 Download PDF

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CN107229131A
CN107229131A CN201710436410.4A CN201710436410A CN107229131A CN 107229131 A CN107229131 A CN 107229131A CN 201710436410 A CN201710436410 A CN 201710436410A CN 107229131 A CN107229131 A CN 107229131A
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driving
driving voltage
liquid crystal
driving electrodes
display panel
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王利民
黄泰钧
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to CN201710436410.4A priority Critical patent/CN107229131A/zh
Priority to US15/562,834 priority patent/US10823977B2/en
Priority to PCT/CN2017/097037 priority patent/WO2018227741A1/zh
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Abstract

本发明提供了一种用于驱动裸眼3D液晶棱镜的***和方法，该***包括：驱动电压确定模块，其用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；液晶棱镜驱动模块，其用于根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对所述液晶棱镜的形状进行调整。本发明可以调整显示装置中液晶棱镜的形状，进而调整最佳观看距离，改善裸眼3D显示器的观看体验。

Description

用于驱动裸眼3D液晶棱镜的***和方法
技术领域
本发明属于显示控制技术领域，具体地说，尤其涉及一种用于驱动裸眼3D液晶棱镜的***和方法。
背景技术
裸眼3D显示技术因其广泛的应用前景而成为新型显示技术的研究热点。根据实现裸眼3D效果的技术原理不同，裸眼3D显示技术可分为光屏障技术、柱状棱镜技术和方向性背光技术三大类，其中，柱状棱镜技术又可根据棱镜的设计差异分为固定棱镜技术和液晶棱镜技术。裸眼3D液晶棱镜技术由于显示特性易于调节，且便于2D和3D切换而广受好评。
传统的裸眼3D液晶棱镜有固定的最佳观看区域和距离。设计完成后，最佳观看区域和距离便固定下来，液晶棱镜等效为一个凸透镜。该等效凸透镜的曲率决定了左右眼画面的偏折情况，进而决定最佳观看距离(最佳观看区域为正对显示器中间，且左右眼分别位于左右视区之内)，如图1所示。
发明内容
为解决以上问题，本发明提供了一种用于驱动裸眼3D液晶棱镜的***和方法，用以调整显示装置中液晶棱镜的形状，进而调整最佳观看距离，改善裸眼3D显示器的观看体验。
根据本发明的一个方面，提供了一种用于驱动裸眼3D液晶棱镜的***，包括：
驱动电压确定模块，其用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
液晶棱镜驱动模块，其用于根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对所述液晶棱镜的形状进行调整。
根据本发明的一个实施例，所述驱动电压确定模块进一步包括：
距离计算单元，其用于根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
驱动电极电压选择单元，其用于根据所述垂直距离选择各驱动电极对应的驱动电压。
根据本发明的一个实施例，所述驱动电压确定模块还包括显示查找表，其用于存储所述垂直距离与各驱动电极对应的驱动电压的对应关系数据。
根据本发明的一个实施例，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
根据本发明的一个实施例，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
根据本发明的一个实施例，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
根据本发明的一个实施例，还包括人眼识别模块，其用于获取所述人眼空间位置信息。
根据本发明的另一个方面，还提了一种用于驱动裸眼3D液晶棱镜的方法，包括：
根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
根据本发明的一个实施例，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压进一步包括：
根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
根据所述垂直距离选择各驱动电极对应的驱动电压。
根据本发明的一个实施例，根据所述垂直距离选择各驱动电极对应的驱动电压进一步包括：
根据所述垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
本发明的有益效果：
本发明通过改变液晶棱镜的形状，实现最佳观看距离的调整，使得任意观看距离均能成为最佳观看距离，从而改善裸眼3D显示器的观看体验。
本发明的其它特征和优点将在随后的说明书中阐述，并且，部分地从说明书中变得显而易见，或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要求书以及附图中所特别指出的结构来实现和获得。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要的附图做简单的介绍：
图1是现有技术中一种裸眼3D液晶棱镜最佳观看距离和观看区域示意图；
图2是根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的***结构示意图；
图3是现有技术中一种液晶棱镜及其驱动电极结构示意图；
图4是根据本发明的一个实施例的液晶棱镜驱动电压、驱动电极设定示意图；
图5是根据本发明的另一个实施例的液晶棱镜驱动电压、驱动电极设定示意图。
图6是根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的方法流程图。
具体实施方式
以下将结合附图及实施例来详细说明本发明的实施方式，借此对本发明如何应用技术手段来解决技术问题，并达成技术效果的实现过程能充分理解并据以实施。需要说明的是，只要不构成冲突，本发明中的各个实施例以及各实施例中的各个特征可以相互结合，所形成的技术方案均在本发明的保护范围之内。
本发明提供了一种用于驱动裸眼3D液晶棱镜的***和方法，通过调整液晶棱镜的形状，而不是人的左右眼视图显示数据，从而实现最佳观看距离的调整，改善裸眼3D显示器的观看体验。
如图2所示为根据本发明的一个实施例的用于驱动裸眼3D液晶棱镜的***结构示意图，以下参考图2来对本发明进行详细说明。
如图2所示，该用于驱动裸眼3D液晶棱镜的***包括驱动电压确定模块11和液晶棱镜驱动模块12。其中，驱动电压确定模块11用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压。液晶棱镜驱动模块12用于根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。在本发明中，基于人眼空间位置信息来调整用于驱动液晶棱镜的驱动电极的电压，进而调整液晶棱镜的形状，使得液晶棱镜的形状随人眼空间位置信息的变化而变化，可以改善裸眼3D显示器的观看体验。
如图2所示，在本发明的一个实施例中，驱动电压确定模块进一步包括距离计算单元111和驱动电极电压选择单元112。其中，距离计算单元111用于根据人眼空间位置信息计算人眼与显示面板之间的垂直距离。驱动电极电压选择单元112用于根据垂直距离选择各驱动电极对应的驱动电压。
在本发明的一个实施例中，该驱动电压确定模块11还包括显示查找表113，其用于存储垂直距离与各驱动电极对应的驱动电压的对应关系数据。也就是说，该查找表113中存储有人眼与显示面板之间的不同垂直距离的数据以及不同垂直距离条件下各个电极的驱动电压。具体的，如图3所示为现有显示器中一种液晶棱镜及其两侧的驱动电极结构示意图，液晶棱镜41的阳极侧设置有多个阳极驱动电极42，如电极1、电极2、电极3、电极4和电极5，阴极侧设置有一个阴极驱动电极43，R表示右眼图像数据，L表示左眼图像数据。通过向多个阳极驱动电极42和阴极驱动电极43施加不同的驱动电压，可以使得液晶棱镜41具有不同的形状，从而具有不同的曲率，进而实现在不同的观看距离下均能达到最佳观看效果。
优选地，该对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。具体的，如表1所示，
表1
向图3中的五个阳极驱动电极施加不同的驱动电压，并且使得施加的驱动电压的数值基于显示面板中央垂直方向(电极3处)保持对称。由于阴极驱动电极43为一面状电极，其整体为一个电位，因此，可不必施加不同的驱动电压。当然，对于阴极驱动电极43也为类似阳极驱动电极42的多个驱动电极结构时，也可以向阴极驱动电极43的各个驱动电极施加不同的驱动电压，本发明不限于此。
在该驱动***工作时，当人眼识别模块监测到人眼距显示面板距离为3m时，选择显示查找表(表1)中第5行的各电压作为对应驱动电极的驱动电压，如图4所示。当人眼识别模块监测到人眼距显示面板距离为2m时，选择显示查找表(表1)中第3行的各电压作为对应驱动电极的驱动电压，如图5所示。这样，就可以根据人眼位置调整液晶棱镜的形状，改善裸眼3D的观看效果。
在本发明的一个实施例中，该***还包括人眼识别模块13，其用于获取人眼空间位置信息。具体的，人眼空间位置信息包括观看显示屏幕的人的双眼中点坐标和双眼瞳距。可以通过设置于显示器上的人眼识别模块拍摄面向屏幕观看区域的人脸图像，识别人脸图像中的双眼通孔坐标，进而得到双眼中点坐标和双眼瞳距。双眼中点坐标为双眼瞳孔坐标的连线中点的坐标，双眼瞳距为双眼瞳孔坐标间的距离。优选地，间隔预定时间，周期性获取人脸图像的双眼中点坐标和双眼瞳距。
在获取到人脸图像的双眼中点坐标和双眼瞳距后，距离计算单元111根据预设算法计算得到双眼中点坐标与显示面板之间的垂直距离。例如，可采用现有标定算法(如张正友标定发)得到双眼中点坐标与显示面板之间的垂直距离的关系曲线，基于该关系曲线，计算双眼中点坐标与显示面板之间的垂直距离。当然，也可以其他方法计算双眼中点坐标与显示面板之间的垂直距离，本发明不限于此。
驱动电极电压选择单元112可以根据距离计算单元111计算得到的垂直距离选择各驱动电极对应的驱动电压。也就是说，对应于不同的垂直距离，驱动电极电压选择单元112选择不同的驱动电压，不同的驱动电压使得液晶棱镜具有不同的形状。不同形状的液晶棱镜具有不同的曲率，不同的曲率对应不同的最佳观看距离。因此，通过调整液晶棱镜的形状，可以使得在任意距离均能达到最佳观看效果，任意距离均是最佳观看距离。
根据本发明的一个实施例，该驱动电压确定模块11还包括人眼侦测结果接收单元114，其用于接收人眼空间位置信息。
根据本发明的一个实施例，该驱动电压确定模块11还包括信号输出单元115，其用于将驱动电压信号输出至液晶棱镜驱动模块12。液晶棱镜驱动模块12根据该驱动电压信号生成对应的驱动信号并输送至对应的驱动电极。
根据本发明的另一个方面，还提供了一种用于驱动裸眼3D液晶棱镜的方法，如图6所示，该方法具体包括以下几个步骤。
首先，在步骤S110中，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压。具体的，驱动电压确定模块11根据人眼空间位置信息计算人眼与显示面板之间的垂直距离，然后根据垂直距离选择各驱动电极对应的驱动电压。根据垂直距离选择各驱动电极对应的驱动电压进一步根据垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
在步骤S120中，根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。具体的，液晶棱镜驱动模块12根据驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
虽然本发明所公开的实施方式如上，但所述的内容只是为了便于理解本发明而采用的实施方式，并非用以限定本发明。任何本发明所属技术领域内的技术人员，在不脱离本发明所公开的精神和范围的前提下，可以在实施的形式上及细节上作任何的修改与变化，但本发明的专利保护范围，仍须以所附的权利要求书所界定的范围为准。

Claims (10)

1.一种用于驱动裸眼3D液晶棱镜的***，包括：
驱动电压确定模块，其用于根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
液晶棱镜驱动模块，其用于根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对所述液晶棱镜的形状进行调整。
2.根据权利要求1所述的***，其特征在于，所述驱动电压确定模块进一步包括：
距离计算单元，其用于根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
驱动电极电压选择单元，其用于根据所述垂直距离选择各驱动电极对应的驱动电压。
3.根据权利要求2所述的***，其特征在于，所述驱动电压确定模块还包括显示查找表，其用于存储所述垂直距离与各驱动电极对应的驱动电压的对应关系数据。
4.根据权利要求3所述的***，其特征在于，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
5.根据权利要求1至4中任一项所述的***，其特征在于，所述驱动电压确定模块还包括人眼侦测结果接收单元，其用于接收所述人眼空间位置信息。
6.根据权利要求5所述的***，其特征在于，所述驱动电压确定模块还包括信号输出单元，其用于将各驱动电压输出至所述液晶棱镜驱动模块。
7.根据权利要求1所述的***，其特征在于，还包括人眼识别模块，其用于获取所述人眼空间位置信息。
8.一种用于驱动裸眼3D液晶棱镜的方法，包括：
根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压；
根据所述驱动电压生成驱动对应驱动电极的驱动信号，以对液晶棱镜的形状进行调整。
9.根据权利要求8所述的方法，其特征在于，根据人眼空间位置信息，确定显示面板中各驱动电极对应的驱动电压进一步包括：
根据所述人眼空间位置信息计算人眼与显示面板之间的垂直距离；
根据所述垂直距离选择各驱动电极对应的驱动电压。
10.根据权利要求8所述的方法，其特征在于，根据所述垂直距离选择各驱动电极对应的驱动电压进一步包括：
根据所述垂直距离与各驱动电极的驱动电压的对应关系数据，选择各驱动电极对应的驱动电压，其中，所述对应关系数据使得液晶棱镜的形状关于显示面板在纵向方向的中心轴保持对称。
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