发明名称 |
Display comprising plurality of birefringent protrusions on a waveguide of a backlight |
摘要 |
A display comprises: a transmissive pixilated spatial light modulator (21); and a backlight (22). The backlight has a light-transmissive waveguide (26), with a first face of the waveguide being opposed to the spatial light modulator (21). The first face of the waveguide comprises a plurality of regions that are not totally internally reflective for at least one polarization of light propagating within the waveguide, and the remainder of the first face of the waveguide is totally internally reflective for light propagating within the waveguide. Light is extracted from the waveguide at the regions where first face of the waveguide is not totally internally reflective. The pitch of the regions where first face of the waveguide is not totally internally reflective is substantially an integer multiple of the pitch of the pixels of the spatial light modulator.
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申请公布号 |
US7920226(B2) |
申请公布日期 |
2011.04.05 |
申请号 |
US20100685774 |
申请日期 |
2010.01.12 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
MATHER JONATHAN;LESAGE ETIENNE;MONTGOMERY DAVID JAMES |
分类号 |
G02F1/1335;F21V8/00;G02F1/13357;H04N13/00 |
主分类号 |
G02F1/1335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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