公开(公告)号：US20070201246A1

公开(公告)日：2007-08-30

申请号：US11679628

申请日：2007-02-27

申请人： Terence Yeo ,  Zane Coleman

发明人： Terence Yeo ,  Zane Coleman

IPC分类号： F21V7/04

CPC分类号： G02B6/0051 ,  G02B6/0038 ,  G02B6/004 ,  G02B6/0041 ,  G02B6/0046 ,  G02B6/0053 ,  G02B6/0065

摘要： A light transmitting diffusing sheet can be used in backlighting systems for liquid crystal displays (LCDs). Such displays are typically used in televisions, computer monitors, laptop computers and handheld devices such as mobile phones. Embodiments of the light diffusing sheets are suitable for use with both cold-cathode fluorescent (CCFL) and light emitting diode based backlighting systems. Desired light transmitting properties in the light transmitting diffusing sheet have been achieved by modifying both the volume and surface features of the sheet. Embodiments of this invention when used as part of the backlighting assembly for a LCD system results in improved brightness and controlled viewing angles. In one embodiment, substantially asymmetric particles in the volume of the sheet are combined with a ridged structure on one surface of the sheet. The use of the sheet removes the need for separate prismatic films and diffusing sheets, while also optimizing the light transmitting properties of these two elements.

摘要翻译： 透光扩散片可用于液晶显示器（LCD）的背光系统中。 这样的显示器通常用于电视机，计算机显示器，膝上型计算机和手持设备，例如移动电话。 光漫射片的实施例适用于冷阴极荧光（CCFL）和基于发光二极管的背光系统。 通过改变片材的体积和表面特征，已经实现了透光扩散片中期望的透光性能。 当用作LCD系统的背光组件的一部分时，本发明的实施例导致改善的亮度和受控的视角。 在一个实施例中，片材体积中的基本上不对称的颗粒与片材的一个表面上的脊状结构组合。 使用该片材不需要单独的棱镜膜和漫射片，同时也优化了这两个元件的透光性能。

公开(公告)号：US20060056021A1

公开(公告)日：2006-03-16

申请号：US11197246

申请日：2005-08-04

申请人： Terence Yeo ,  Zane Coleman

发明人： Terence Yeo ,  Zane Coleman

IPC分类号： G03B21/56

CPC分类号： G02B5/0242 ,  G02B5/0278 ,  G03B21/10 ,  G03B21/62 ,  G03B21/625

摘要： A multi-region light scattering element with the optical characteristics of low speckle, high resolution high contrast, and high gain when used as an imaging element without any resulting loss of transmission or brightness with viewing angle. The multi-region light scattering element contains at least one region asymmetrically shaped light scattering features that are separated from a second light scattering region by a non-scattering region. In one embodiment, one or more of the regions contains particles that are asymmetrically shaped that improve the optical performance. In one embodiment, asymmetric particles are located in two regions separated by a non-scattering region with the particles within each region substantially aligned along an axis and the two axes are substantially perpendicular to each other. Methods for production of the screen element are also described.

摘要翻译： 具有低散斑，高分辨率高对比度和高增益的光学特性的多区域光散射元件用作成像元件，而不会导致视角下的透射或亮度损失。 多区域光散射元件包含至少一个区域不对称形状的光散射特征，其通过非散射区域与第二光散射区域分离。 在一个实施例中，一个或多个区域包含不对称成形的颗粒，以提高光学性能。 在一个实施例中，不对称颗粒位于由非散射区域分开的两个区域中，每个区域内的颗粒基本上沿轴线对准，并且两个轴线基本上彼此垂直。 还描述了用于生产屏幕元件的方法。