发明名称 A display with a privacy mask for selectively restricting wide-angle viewing
摘要 A display comprises a first plurality of pixels 26(a) at least partially covered by a mask 22 and a second plurality of pixels 26(b) at least partially uncovered by the mask 22. The mask 22 blocks light emitted at wide viewing angles from the second plurality of pixels 26(b) and may also block light emitted at narrow viewing angles from the first plurality of pixels 26(a). The mask 22 may comprise alternating opaque and transparent stripes, or may be presented in a chequerboard arrangement. In a privacy mode, data is written only to the second plurality of pixels 26(b) and consequently the light emitted is viewable only at narrow viewing angles. Optionally, the privacy mode also comprises wilting a spoiler image to the first plurality of pixels 26(a), viewable only from a wide viewing angle. The privacy filtering effect may be used in ATM displays, where sensitive information is to be masked from 'over-the-shoulder' onlookers.
申请公布号 GB2453806(A) 申请公布日期 2009.04.22
申请号 GB20080000063 申请日期 2008.01.03
申请人 POLYMER OPTICS LIMITED 发明人 RICHARD JOHN LEWIS;MICHAEL JOHN HANNEY
分类号 G02F1/1335 主分类号 G02F1/1335
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