发明申请
US20110279749A1 High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution
有权
高动态范围显示器使用无滤光片来增加对比度和分辨率
- 专利标题: High Dynamic Range Displays Using Filterless LCD(s) For Increasing Contrast And Resolution
- 专利标题(中): 高动态范围显示器使用无滤光片来增加对比度和分辨率
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申请号: US12780749申请日: 2010-05-14
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公开(公告)号: US20110279749A1公开(公告)日: 2011-11-17
- 发明人: Gopal Erinjippurath , John Gilbert
- 申请人: Gopal Erinjippurath , John Gilbert
- 申请人地址: US CA San Francisco
- 专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人: DOLBY LABORATORIES LICENSING CORPORATION
- 当前专利权人地址: US CA San Francisco
- 主分类号: G02F1/1335
- IPC分类号: G02F1/1335 ; G09G5/10 ; G09G5/02 ; G09G3/36 ; G09G5/00
摘要:
A display provides increased contrast and resolution via first LCD panel energized to generate an image and a second LCD panel configured to increase contrast of the image. The second panel is an LCD panel without color filters and is configured to increase contrast by decreasing black levels of dark portions of images (making them blacker or darker) using polarization rotation and filtration. Preferably, the second LCD panel is of higher resolution than the first LCD panel. The panels may be directly illuminated or edge lit, and may be globally or locally dimmed monochrome or multi primary lights that may also include individual control of color intensities for each image or frame displayed. The panels may be placed in any order, but preferably are arranged such that active layers in each panel are as close together as possible. Brightness is maintained by the combination of reusing polarization between the panels and by not going through more than one set of color filters. Improved contrast is a result of using multiple light modulators in series.
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