Seamless ultrathin rear projection display,Journal of the Society for Information Display

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Seamless ultrathin rear projection display
Journal of the Society for Information Display ( IF 1.7 ) Pub Date : 2019-11-27 , DOI: 10.1002/jsid.864
Adrian H. Kitai ₁

Affiliation

A new architecture for a thin (2‐cm depth) rear projection display is described. In order to achieve this small depth, a very high density of rear projectors is used. Three prototype displays using rear projectors on both 5‐ and 2‐cm pitch arrays are described. The displays can achieve an effective screen pixel pitch of as small as 0.5 mm, which makes this technology competitive in terms of resolution with fine pitch LED displays; however, orders of magnitude fewer LEDs are required: Each rear projector requires only one white LED and a color liquid crystal light modulator. In the three prototypes, the projector light modulators utilize 101‐cm (40 in.), 80‐cm (31.5 in.), and 60‐cm (24 in.) diagonal liquid crystal display glass. To minimize cost, no lenses are utilized for the rear projectors. An RGB LED array may augment the projector array, which provides a low resolution component of the image onto which the high resolution component is superimposed by the projector array. Edge gaps between active areas on adjacent LCD glass units are completely eliminated by the rear projection approach enabling low profile wall‐size seamless displays. Display contrast depends on rear projection screen design.

中文翻译：

无缝超薄背投显示器

描述了一种用于薄型（2厘米深度）背投显示器的新架构。为了实现这种小的深度，使用了非常高密度的后投影仪。描述了使用5厘米和2厘米间距阵列上的背投式投影仪的三个原型显示器。显示器可以实现小至0.5 mm的有效屏幕像素间距，这使得该技术在分辨率方面与小间距LED显示器竞争。但是，所需的LED数量却要少几个数量级：每个背面投影仪仅需要一个白色LED和一个彩色液晶光调制器。在这三个原型中，投影仪光调制器使用101厘米（40英寸），80厘米（31.5英寸）和60厘米（24英寸）对角线液晶显示屏玻璃。为了最大程度地降低成本，后投影仪不使用任何镜头。RGB LED阵列可以扩大投影仪阵列，它提供了投影仪阵列将高分辨率分量叠加到其上的图像的低分辨率分量。背面投影方法完全消除了相邻LCD玻璃单元上有效区域之间的边缘间隙，从而实现了薄型墙尺寸无缝显示器。显示对比度取决于背投屏幕的设计。

更新日期：2019-11-27

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